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Slek C, Magnin M, Allaouchiche B, Bonnet JM, Junot S, Louzier V, Victoni T. Association between cytokines, nitric oxide, hemodynamic and microcirculation in a porcine model of sepsis. Microvasc Res 2024; 156:104730. [PMID: 39111365 DOI: 10.1016/j.mvr.2024.104730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 07/07/2024] [Accepted: 08/04/2024] [Indexed: 08/11/2024]
Abstract
Systemic inflammation and hemodynamic or microvascular alterations are a hallmark of sepsis and play a role in organs hypoperfusion and dysfunction. Pimobendan, an inodilator agent, could be an interesting option for inotropic support and microcirculation preservation during shock. The objectives of this study were to evaluate effect of pimobendan on cytokine and nitric oxide (NO) release and investigate whether changes of macro and microcirculation parameters are associated with the release of cytokines and NO in pigs sepsis model. After circulatory failure, induced by intravenous inoculation of live Pseudomonas aeruginosa, eight animals were treated with pimobendan and eight with placebo. Pimobendan did not affect cytokines secretion (TNF-α, IL-6 and IL-10), but decreased time-dependently NO release. Data of macro and microcirculation parameters, NO and TNF- α recorded at the time of circulatory failure (Thypotension) and the time maximum of production cytokines was used for analyses. A positive correlation was observed between TNF-α and cardiac index (r = 0.55, p = 0.03) and a negative with systemic vascular resistance (r = -0.52, p = 0.04). Positive correlations were seen both between IL-10, 30 min after resuscitation (T30min), and systolic arterial pressure (r = 0.57, p = 0.03) and cardiac index (r = 0.67, p = 0.01), and also between IL-6, taken 2 h after resuscitation and systolic arterial pressure (r = 0.53, p = 0.04). Negative correlations were found between IL-10 and lactate, measured resuscitation time (r = -0.58, p = 0.03). Regarding microcirculation parameters, we observed a positive correlation between IL-6 and IL-10 with the microvascular flow index (r = 0.52, p = 0.05; r = 0.84, p = 0.0003) and a negative correlation with the heterogeneity index with TNF-α and IL-10 (r = -0.51, p = 0.05; r = -0.74, p = 0.003) respectively. NO derivatives showed a positive correlation with temperature gradient (r = 0.54, p = 0.04). Pimobendan did not show anti-inflammatory effects in cytokines release. Our results also, suggest changes of macro- and microcirculation are associated mainly with low levels of IL-10 in sepsis.
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Affiliation(s)
- Charlotte Slek
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France.
| | - Mathieu Magnin
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France.
| | - Bernard Allaouchiche
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France; Université de Lyon, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Réanimation Médicale, 165 Chemin du Grand Revoyet, 69495 Pierre-Bénite, France
| | - Jeanne Marie Bonnet
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France.
| | - Stéphane Junot
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France.
| | - Vanessa Louzier
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France.
| | - Tatiana Victoni
- Université de Lyon, APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis-, UP 2021.A101, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Étoile, France.
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Fiedler LS, Lippert BM, Adrian L, Meyer T. Perfusion in Pedicled Skin Flaps: Initial Insights from Smartphone-Based Thermal Imaging Protocol. J Pers Med 2024; 14:730. [PMID: 39063984 PMCID: PMC11278002 DOI: 10.3390/jpm14070730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/28/2024] Open
Abstract
OBJECTIVE Successful outcomes in head and neck surgery rely on maintaining perfusion in pedicled skin flaps. Thermal imaging offers a noninvasive means to assess tissue perfusion, potentially aiding in predicting flap viability. This pilot study explores the utility of SBTI (smartphone-based thermal imaging) for predicting flap vitality and monitoring during surgery. METHODS Thermal imaging was employed using the FLIR One System. An imaging protocol was established, defining points of interest (T1-T4) on pedicled skin flaps. Conducted over four months, the study integrated SBTI into reconstructive surgery for the face, head and neck defects post-tumor resections. SBTI's effectiveness was assessed with n = 11 pedicled flaps, capturing images at key stages and correlating them with clinical flap assessment. Thermal images were retrospectively graded by two surgeons, evaluating flap perfusion on a scale from 1 to 5, based on temperature differences (1 = ΔT < 2 °C, 2 = ΔT ≥ 2 °C, 3 = ΔT ≥ 4 °C, 4 = ΔT ≥ 6 °C, and 5 = ΔT ≥ 8 °C), with assessments averaged for consensus and compared with the clinical assessment control group. RESULTS The study encountered challenges during implementation, leading to the exclusion of six patients. Patient data included 11 cases with n = 44 SBTI images. Intraoperative assessments consistently showed good perfusion. One postoperative dehiscence was noted, which retrospectively coincided with intraoperative SBTI grading, but not with clinical assessment. Statistical analysis indicated consistent outcomes following clinical and SBTI assessments. Thermal imaging accurately predicted flap viability, although it had limitations with small flaps. CONCLUSION SBTI proved effective, inexpensive, and noninvasive for assessing tissue perfusion, showing promise for predicting flap viability and intraoperative monitoring in head and neck surgery.
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Affiliation(s)
- Lukas S. Fiedler
- Department for Otorhinolaryngology/Head and Neck, Plastic Surgery, SLK Kliniken Heilbronn, 74078 Heilbronn, Germany
- Faculty of Medicine, Heidelberg University, 69120 Heidelberg, Germany
| | - Burkard M. Lippert
- Department for Otorhinolaryngology/Head and Neck, Plastic Surgery, SLK Kliniken Heilbronn, 74078 Heilbronn, Germany
| | - Lukas Adrian
- Department for Otorhinolaryngology/Head and Neck, Plastic Surgery, SLK Kliniken Heilbronn, 74078 Heilbronn, Germany
| | - Tobias Meyer
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Tübingen, 72076 Tübingen, Germany
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Harrap MJM, de Vere N, Hempel de Ibarra N, Whitney HM, Rands SA. Variations of floral temperature in changing weather conditions. Ecol Evol 2024; 14:e11651. [PMID: 38952664 PMCID: PMC11214831 DOI: 10.1002/ece3.11651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 07/03/2024] Open
Abstract
Floral temperature is a flower characteristic that has the potential to impact the fitness of flowering plants and their pollinators. Likewise, the presence of floral temperature patterns, areas of contrasting temperature across the flower, can have similar impacts on the fitness of both mutualists. It is currently poorly understood how floral temperature changes under the influence of different weather conditions, and how floral traits may moderate these changes. The way that floral temperature changes with weather conditions will impact how stable floral temperatures are over time and their utility to plants and pollinators. The stability of floral temperature cues is likely to facilitate effective plant-pollinator interactions and play a role in the plant's reproductive success. We use thermal imaging to monitor how floral temperatures and temperature patterns of four plant species (Cistus 'snow fire' and 'snow white', Coreopsis verticillata and Geranium psilostemon) change with several weather variables (illumination, temperature; windspeed; cloud cover; humidity and pressure) during times that pollinators are active. All weather variables influenced floral temperature in one or more species. The directionality of these relationships was similar across species. In all species, light conditions (illumination) had the greatest influence on floral temperatures overall. Floral temperature and the extent to which flowers showed contrasting temperature patterns were influenced predominantly by light conditions. However, several weather variables had additional, lesser, influences. Furthermore, differences in floral traits, pigmentation and structure, likely resulted in differences in temperature responses to given conditions between species and different parts of the same flower. However, floral temperatures and contrasting temperature patterns that are sufficiently elevated for detection by pollinators were maintained across most conditions if flowers received moderate illumination. This suggests the presence of elevated floral temperature and contrasting temperature patterns are fairly constant and may have potential to influence plant-pollinator interactions across weather conditions.
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Affiliation(s)
- Michael J. M. Harrap
- School of Biological SciencesUniversity of BristolBristolUK
- Centre for Research in Animal Behaviour, School of PsychologyUniversity of ExeterExeterUK
- Institute of Biology IAlbert‐Ludwigs‐Universität FreiburgFreiburgGermany
| | - Natasha de Vere
- Natural History Museum of DenmarkUniversity of CopenhagenCopenhagenDenmark
| | | | | | - Sean A. Rands
- School of Biological SciencesUniversity of BristolBristolUK
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Magnin M, Gavet M, Ngo TT, Louzier V, Victoni T, Ayoub JY, Allaouchiche B, Bonnet-Garin JM, Junot S. A multimodal tissue perfusion measurement approach for the evaluation of the effect of pimobendan, an inodilator, in a porcine sepsis model. Microvasc Res 2024; 154:104687. [PMID: 38614155 DOI: 10.1016/j.mvr.2024.104687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/03/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
Sepsis is associated with hypoperfusion and organ failure. The aims of the study were: 1) to assess the effect of pimobendan on macrocirculation and perfusion and 2) to describe a multimodal approach to the assessment of perfusion in sepsis and compare the evolution of the perfusion parameters. Eighteen anaesthetized female piglets were equipped for macrocirculation monitoring. Sepsis was induced by an infusion of Pseudomonas aeruginosa. After the occurrence of hypotension, animals were resuscitated. Nine pigs received pimobendan at the start of resuscitation maneuvers, the others received saline. Tissue perfusion was assessed using temperature gradients measured with infrared thermography (TG = core temperature - tarsus temperature), urethral perfusion index (uPI) derived from photoplethysmography and sublingual microcirculation (Sidestream dark field imaging device): De Backer score (DBs), proportion of perfused vessels (PPV), microvascular flow index (MFI) and heterogeneity index (HI). Arterial lactate and ScvO2 were also measured. Pimobendan did not improve tissue perfusion nor macrocirculation. It did not allow a reduction in the amount of noradrenaline and fluids administered. Sepsis was associated with tissue perfusion disorders: there were a significant decrease in uPI, PPV and ScvO2 and a significant rise in TG. TG could significantly predict an increase in lactate. Resuscitation was associated with a significant increase in uPI, DBs, MFI, lactate and ScvO2. There were fair correlations between the different perfusion parameters. In this model, pimobendan did not show any benefit. The multimodal approach allowed the detection of tissue perfusion alteration but only temperature gradients predicted the increase in lactatemia.
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Affiliation(s)
- Mathieu Magnin
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
| | - Morgane Gavet
- Université de Lyon, VetAgro Sup, Service d'Anesthésie, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
| | - Thien-Tam Ngo
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France
| | - Vanessa Louzier
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
| | - Tatiana Victoni
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
| | - Jean Yves Ayoub
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
| | - Bernard Allaouchiche
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Réanimation Médicale, 165 Chemin du Grand Revoyet, F-69310 Pierre-Bénite, France
| | - Jeanne-Marie Bonnet-Garin
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
| | - Stéphane Junot
- Université de Lyon, UR APCSe Agressions Pulmonaires et Circulatoires dans le Sepsis, VetAgro Sup, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, Vetagro Sup, Unité de Physiologie, Pharmacodynamie et Thérapeutique, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France; Université de Lyon, VetAgro Sup, Service d'Anesthésie, 1 avenue Bourgelat, F-69280 Marcy l'Etoile, France.
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Sheng H, Li H, Li S, Yu C, Wang Y, Hu H, Fang L, Chen F, Lu Y, Xu X, Yang X, Chen S, Hao Y, Li Y, Feng S, Chen J. Synchronously in vivo real-time monitoring bacterial load and temperature with evaluating immune response to decipher bacterial infection. Bioeng Transl Med 2024; 9:e10656. [PMID: 39036094 PMCID: PMC11256147 DOI: 10.1002/btm2.10656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 01/24/2024] [Accepted: 02/12/2024] [Indexed: 07/23/2024] Open
Abstract
Determining the precise course of bacterial infection requires abundant in vivo real-time data. Synchronous monitoring of the bacterial load, temperature, and immune response can satisfy the shortage of real-time in vivo data. Here, we conducted a study in the joint-infected mouse model to synchronously monitor the bacterial load, temperature, and immune response using the second near-infrared (NIR-II) fluorescence imaging, infrared thermography, and immune response analysis for 2 weeks. Staphylococcus aureus (S. aureus) was proved successfully labeled with glucose-conjugated quantum dots in vitro and in subcutaneous-infected model. The bacterial load indicated by NIR-II fluorescence imaging underwent a sharp drop at 1 day postinfection. At the same time, the temperature gap detected through infrared thermography synchronously brought by infection reached lowest value. Meanwhile, the flow cytometry analysis demonstrated that immune response including macrophage, neutrophil, B lymphocyte, and T lymphocyte increased to the peak at 1 day postinfection. Moreover, both M1 macrophage and M2 macrophage in the blood have an obvious change at ~ 1 day postinfection, and the change was opposite. In summary, this study not only obtained real-time and long-time in vivo data on the bacterial load, temperature gap, and immune response in the mice model of S. aureus infection, but also found that 1 day postinfection was the key time point during immune response against S. aureus infection. Our study will contribute to synchronously and precisely studying the complicated complex dynamic relationship after bacterial infection at the animal level.
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Affiliation(s)
- Huaixuan Sheng
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Huizhu Li
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Shunyao Li
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Chengxuan Yu
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Yueming Wang
- Department of Anatomy and PhysiologySchool of Medicine, Shanghai Jiao Tong UniversityShanghaiChina
| | - Haichen Hu
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Lu Fang
- University of Chinese Academy of SciencesBeijingChina
- Key Laboratory of Infrared System Detection and Imaging Technology, Shanghai Institute of Technical Physics, Chinese Academy of SciencesShanghaiChina
| | - Fuchun Chen
- Key Laboratory of Infrared System Detection and Imaging Technology, Shanghai Institute of Technical Physics, Chinese Academy of SciencesShanghaiChina
| | - Yanyan Lu
- Institute of Antibiotics, Huashan Hospital, Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Fudan UniversityShanghaiChina
| | - Xiaogang Xu
- Institute of Antibiotics, Huashan Hospital, Key Laboratory of Clinical Pharmacology of Antibiotics, National Health Commission, Fudan UniversityShanghaiChina
| | - Xing Yang
- Department of OrthopedicsAffiliated Suzhou Hospital of Nanjing Medical UniversitySuzhouChina
| | - Shiyi Chen
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Yuefeng Hao
- Department of OrthopedicsAffiliated Suzhou Hospital of Nanjing Medical UniversitySuzhouChina
| | - Yunxia Li
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Sijia Feng
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
| | - Jun Chen
- Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan HospitalFudan UniversityShanghaiChina
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Russell JP, Osborn SD, Herrick KES, Schmitt TL, Robeck T. Infrared Thermography of the Blowhole as a Potential Diagnostic Tool for Health Assessment in Killer Whales ( Orcinus orca). Animals (Basel) 2024; 14:1867. [PMID: 38997980 PMCID: PMC11240490 DOI: 10.3390/ani14131867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/19/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024] Open
Abstract
Killer whales (Orcinus orca) are experiencing increasing environmental pressures, with some ecotypes being identified as endangered, and the development and validation of non-invasive health assessment tools is critical for assessing the well-being of individuals within these endangered populations. Infrared thermography of the blowhole is a non-contact method of temperature measurement that was recently investigated in killer whales in managed care. Two male killer whales presenting with clinical signs at separate institutions had veterinary clinical health assessments performed, which included infrared thermography of the blowhole as well as concurrent rectal temperature measurement. The current case report is aimed at describing the clinical use of infrared thermography of the blowhole as a method to detect elevated body temperature in two killer whales. Both animals exhibited blowhole temperatures above the previously reported values (36.4 °C and 37.6 °C; the mean in healthy whales is reported to be 34.21 ± 1.47 °C) with concurrently elevated rectal temperatures, as well as clinicopathologic findings consistent with a systemic inflammatory response (e.g., neutrophilia, increased fibrinogen and erythrocyte sedimentation rate, hypoferritinemia). Following veterinary intervention, both animals' blowhole and rectal temperatures returned to baseline. Infrared thermography of the blowhole represents a promising tool for the identification of pyrexic animals and with further investigation may be considered as part of conservation health assessments for threatened free-ranging populations.
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Affiliation(s)
- Jennifer P Russell
- SeaWorld San Diego Zoological Department, 500 SeaWorld Drive, San Diego, CA 92109, USA
- SeaWorld San Antonio Zoological Department, 10500 SeaWorld Drive, San Antonio, TX 78251, USA
| | - Steve D Osborn
- SeaWorld San Antonio Zoological Department, 10500 SeaWorld Drive, San Antonio, TX 78251, USA
| | - Kelsey E S Herrick
- SeaWorld San Diego Zoological Department, 500 SeaWorld Drive, San Diego, CA 92109, USA
| | - Todd L Schmitt
- SeaWorld San Diego Zoological Department, 500 SeaWorld Drive, San Diego, CA 92109, USA
| | - Todd Robeck
- SeaWorld Orlando Zoological Department, 7007 SeaWorld Drive, Orlando, FL 32821, USA
- SeaWorld and Busch Gardens Species Preservation Laboratory, 2595 Ingraham St., San Diego, CA 92109, USA
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7
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Kung M, Zeng J, Lin S, Yu X, Liu C, Shi M, Sun R, Yuan S, Lian X, Su X, Zhao Y, Zheng Z, Ji X. Prediction of coronary artery disease based on facial temperature information captured by non-contact infrared thermography. BMJ Health Care Inform 2024; 31:e100942. [PMID: 38830766 PMCID: PMC11149132 DOI: 10.1136/bmjhci-2023-100942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 03/06/2024] [Indexed: 06/05/2024] Open
Abstract
BACKGROUND Current approaches for initial coronary artery disease (CAD) assessment rely on pretest probability (PTP) based on risk factors and presentations, with limited performance. Infrared thermography (IRT), a non-contact technology that detects surface temperature, has shown potential in assessing atherosclerosis-related conditions, particularly when measured from body regions such as faces. We aim to assess the feasibility of using facial IRT temperature information with machine learning for the prediction of CAD. METHODS Individuals referred for invasive coronary angiography or coronary CT angiography (CCTA) were enrolled. Facial IRT images captured before confirmatory CAD examinations were used to develop and validate a deep-learning IRT image model for detecting CAD. We compared the performance of the IRT image model with the guideline-recommended PTP model on the area under the curve (AUC). In addition, interpretable IRT tabular features were extracted from IRT images to further validate the predictive value of IRT information. RESULTS A total of 460 eligible participants (mean (SD) age, 58.4 (10.4) years; 126 (27.4%) female) were included. The IRT image model demonstrated outstanding performance (AUC 0.804, 95% CI 0.785 to 0.823) compared with the PTP models (AUC 0.713, 95% CI 0.691 to 0.734). A consistent level of superior performance (AUC 0.796, 95% CI 0.782 to 0.811), achieved with comprehensive interpretable IRT features, further validated the predictive value of IRT information. Notably, even with only traditional temperature features, a satisfactory performance (AUC 0.786, 95% CI 0.769 to 0.803) was still upheld. CONCLUSION In this prospective study, we demonstrated the feasibility of using non-contact facial IRT information for CAD prediction.
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Affiliation(s)
- Minghui Kung
- Department of Automation, Tsinghua University, Beijing, China
- Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China
| | - Juntong Zeng
- National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shen Lin
- National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Key Laboratory of Coronary Heart Disease Risk Prediction and Precision Therapy, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xuexin Yu
- Department of Automation, Tsinghua University, Beijing, China
| | - Chang Liu
- Department of Automation, Tsinghua University, Beijing, China
| | - Mengnan Shi
- Department of Automation, Tsinghua University, Beijing, China
| | - Runchen Sun
- National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shangyuan Yuan
- Department of Automation, Tsinghua University, Beijing, China
- Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China
| | - Xiaocong Lian
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing, China
| | - Xiaoting Su
- National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yan Zhao
- National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Key Laboratory of Coronary Heart Disease Risk Prediction and Precision Therapy, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhe Zheng
- National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing, China
- Key Laboratory of Coronary Heart Disease Risk Prediction and Precision Therapy, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiangyang Ji
- Department of Automation, Tsinghua University, Beijing, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing, China
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Cafarelli A, Sorriento A, Marola G, Amram D, Rabusseau F, Locteau H, Cabras P, Dumont E, Nakhaei S, Jernberger A, Bergsten P, Spinnato P, Russo A, Ricotti L. Usability Assessment of Technologies for Remote Monitoring of Knee Osteoarthritis. IEEE OPEN JOURNAL OF ENGINEERING IN MEDICINE AND BIOLOGY 2024; 5:476-484. [PMID: 38899019 PMCID: PMC11186643 DOI: 10.1109/ojemb.2024.3407961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 03/29/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Goal: To evaluate the usability of different technologies designed for a remote assessment of knee osteoarthritis. Methods: We recruited eleven patients affected by mild or moderate knee osteoarthritis, eleven caregivers, and eleven clinicians to assess the following technologies: a wristband for monitoring physical activity, an examination chair for measuring leg extension, a thermal camera for acquiring skin thermographic data, a force balance for measuring center of pressure, an ultrasound imaging system for remote echographic acquisition, a mobile app, and a clinical portal software. Specific questionnaires scoring usability were filled out by patients, caregivers and clinicians. Results: The questionnaires highlighted a good level of usability and user-friendliness for all the technologies, obtaining an average score of 8.7 provided by the patients, 8.8 by the caregivers, and 8.5 by the clinicians, on a scale ranging from 0 to 10. Such average scores were calculated by putting together the scores obtained for the single technologies under evaluation and averaging them. Conclusions: This study demonstrates a high level of acceptability for the tested portable technologies designed for a potentially remote and frequent assessment of knee osteoarthritis.
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Affiliation(s)
- Andrea Cafarelli
- BioRobotics InstituteScuola Superiore Sant'Anna56127PisaItaly
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna56127PisaItaly
| | - Angela Sorriento
- BioRobotics InstituteScuola Superiore Sant'Anna56127PisaItaly
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna56127PisaItaly
| | - Giorgia Marola
- BioRobotics InstituteScuola Superiore Sant'Anna56127PisaItaly
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna56127PisaItaly
| | - Denise Amram
- DIRPOLIS Institute L'EMbeDS Department of ExcellenceScuola Superiore Sant'Anna56127PisaItaly
| | | | | | | | | | - Sam Nakhaei
- Hitech & Development Wireless Sweden AB (H&D Wireless)164 51KistaSweden
| | - Ake Jernberger
- Hitech & Development Wireless Sweden AB (H&D Wireless)164 51KistaSweden
| | - Pär Bergsten
- Hitech & Development Wireless Sweden AB (H&D Wireless)164 51KistaSweden
| | - Paolo Spinnato
- Diagnostic and Interventional RadiologyIRCCS Istituto Ortopedico Rizzoli40136BolognaItaly
| | | | - Leonardo Ricotti
- BioRobotics InstituteScuola Superiore Sant'Anna56127PisaItaly
- Department of Excellence in Robotics and AIScuola Superiore Sant'Anna56127PisaItaly
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9
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Sortino M, Trovato B, Zanghì M, Roggio F, Musumeci G. Active Breaks Reduce Back Overload during Prolonged Sitting: Ergonomic Analysis with Infrared Thermography. J Clin Med 2024; 13:3178. [PMID: 38892891 PMCID: PMC11172579 DOI: 10.3390/jcm13113178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/20/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Background: Prolonged sitting is a potential risk factor for musculoskeletal disorders in office workers. This study aims to evaluate the effect of active breaks on reducing muscle overload in subjects who sit for long periods using infrared thermography (IRT). Methods: A sample of 57 office workers participated in this study and were divided into two groups: active breaks (ABs) and no active breaks (NABs). The NAB group sat continuously for 90 min without standing up, while the AB group performed stretching and mobility exercises every 30 min. IRT measurements were taken every 30 min before the active breaks. Results: The results highlight that the skin temperature of the back increased significantly in both groups after 30 min of sitting; however, in the subsequent measurements, the AB group showed a decrease in temperature, while the NAB group maintained a high temperature. Exercise and time point of measurement all reported p-values < 0.001; there were no statistically significant differences between the Δt0-1 of the NAB and AB groups, while the Δt1-2 and Δt1-3 of the NAB and AB groups showed statistically significant differences for all back regions. Conclusions: The clinical relevance of this study confirms the negative effects of prolonged sitting on the health of the back, demonstrating that active breaks can reduce back strain, emphasizing the need for workplace interventions. In addition, IRT represents a non-invasive method to assess back muscle overload and monitor the effectiveness of interventions in all categories of workers who maintain a prolonged sitting position. The main limitation of this study is the absence of a questionnaire for the assessment of back pain, which does not allow a direct correlation between temperature changes and back pain outcomes.
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Affiliation(s)
- Martina Sortino
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, 95123 Catania, Italy; (M.S.); (B.T.); (M.Z.); (G.M.)
| | - Bruno Trovato
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, 95123 Catania, Italy; (M.S.); (B.T.); (M.Z.); (G.M.)
| | - Marta Zanghì
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, 95123 Catania, Italy; (M.S.); (B.T.); (M.Z.); (G.M.)
| | - Federico Roggio
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, 95123 Catania, Italy; (M.S.); (B.T.); (M.Z.); (G.M.)
| | - Giuseppe Musumeci
- Department of Biomedical and Biotechnological Sciences, Section of Anatomy, Histology and Movement Science, School of Medicine, University of Catania, 95123 Catania, Italy; (M.S.); (B.T.); (M.Z.); (G.M.)
- Research Center on Motor Activities (CRAM), University of Catania, 95123 Catania, Italy
- Department of Biology, Sbarro Institute for Cancer Research and Molecular Medicine, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
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10
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Molina-Payá FJ, Sánchez Romero EA, Fernández-Carnero S, Noguera-Iturbe Y, Selva-Sarzo F. Effect of transcutaneous neuromodulation on normalization of dermal body temperature and pain in a tender scar in the presence of low back pain: An update and case report. SAGE Open Med Case Rep 2024; 12:2050313X241249058. [PMID: 38746022 PMCID: PMC11092538 DOI: 10.1177/2050313x241249058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 04/05/2024] [Indexed: 05/16/2024] Open
Abstract
Low back pain affects over 20% of individuals during their lifetime, and in some patients, it may be associated with scar tissue formation after surgery. Small-fiber neuropathy and scar tissue dysfunction can lead to localized pain by affecting signals to the thalamus. Transcutaneous neuromodulation using Tape with Magnetic Particles shows promise in relieving perceived pain, modulating vascularization and the autonomic nervous system, and reducing dermal temperature. In the present case, a 24-year-old woman with L5-S1 disk herniation experienced low back pain and leg pressure. The surgical intervention provided temporary relief, but scar restrictions caused pain recurrence. Tape with Magnetic Particles application initially induced scar hypothermia and pressure tolerance during posteroanterior tests on lumbar spinous processes increased, reducing pain perception for at least 12 h. Transcutaneous neuromodulation with Tape with Magnetic Particles modulated dermal temperature immediately and for 12 h, reducing perceived pain and sustaining improvement thereafter. This highlights the potential of Tape with Magnetic Particles in managing chronic low back pain associated with scar tissue.
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Affiliation(s)
- Francisco J Molina-Payá
- Department of Physiotherapy, Faculty of Health Sciences, Universidad Cardenal Herrera-CEU, Elche Campus, Elx, Alicante, Comunitat Valenciana, Spain
| | - Eleuterio A. Sánchez Romero
- Department of Rehabilitation, Faculty of Sport Sciences, Universidad Europea de Madrid, Madrid, Spain
- Interdisciplinary Group on Musculoskeletal Disorders, Faculty of Sport Sciences, Universidad Europea de Madrid, Madrid, Spain
- Physiotherapy and Orofacial Pain Working Group, Sociedad Española de Disfunción Craneomandibular y Dolor Orofacial (SEDCYDO), Madrid, Spain
- Research Group in Nursing and Health Care, Puerta de Hierro Health Research Institute-Segovia de Arana (IDIPHISA), Majadahonda, Spain
| | - Samuel Fernández-Carnero
- Department of Rehabilitation, Faculty of Sport Sciences, Universidad Europea de Madrid, Madrid, Spain
- Universidad de Alcalá, Facultad de Enfermería y Fisioterapia, Departamento Fisioterapia, Grupo de Investigación en Fisioterapia y Dolor, Alcalá de Henares, Spain
| | - Yolanda Noguera-Iturbe
- Department of Physiotherapy, Faculty of Health Sciences, Universidad Cardenal Herrera-CEU, Elche Campus, Elx, Alicante, Comunitat Valenciana, Spain
| | - Francisco Selva-Sarzo
- Interdisciplinary Group on Musculoskeletal Disorders, Faculty of Sport Sciences, Universidad Europea de Madrid, Madrid, Spain
- Department of Physiotherapy, University of Valencia, Valencia, Spain
- Department of Physiotherapy, University of Valencia, Master of Permanent Training in Assessment, Physiotherapy and Performance in Sport, Valencia, Spain
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11
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Tilley HB, Murphy D, Wierucka K, Wong TC, Surreault-Châble A, Mumby HS. Physical activity and temperature changes of Asian elephants (Elephas maximus) participating in eco-tourism activities and elephant polo. PLoS One 2024; 19:e0300373. [PMID: 38696403 PMCID: PMC11065253 DOI: 10.1371/journal.pone.0300373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 02/26/2024] [Indexed: 05/04/2024] Open
Abstract
Captive and domestic animals are often required to engage in physical activity initiated or organised by humans, which may impact their body temperature, with consequences for their health and welfare. This is a particular concern for animals such as elephants that face thermoregulatory challenges because of their body size and physiology. Using infrared thermography, we measured changes in skin temperature associated with two types of physical activity in ten female Asian elephants (Elephas maximus) at an eco-tourism lodge in Nepal. Six elephants took part in an activity relatively unfamiliar to the elephants-a polo tournament-and four participated in more familiar ecotourism activities. We recorded skin temperatures for four body regions affected by the activities, as well as an average skin temperature. Temperature change was used as the response variable in the analysis and calculated as the difference in elephant temperature before and after activity. We found no significant differences in temperature change between the elephants in the polo-playing group and those from the non-polo playing group. However, for both groups, when comparing the average skin body temperature and several different body regions, we found significant differences in skin temperature change before and after activity. The ear pinna was the most impacted region and was significantly different to all other body regions. This result highlights the importance of this region in thermoregulation for elephants during physical activity. However, as we found no differences between the average body temperatures of the polo and non-polo playing groups, we suggest that thermoregulatory mechanisms can counteract the effects of both physical activities the elephants engaged in.
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Affiliation(s)
- Hannah B. Tilley
- Applied Behavioural Ecology and Conservation Lab, Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Derek Murphy
- Applied Behavioural Ecology and Conservation Lab, Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR
- German Primate Centre—Leibniz Institute for Primate Research, Cognitive Ethology Laboratory, Göttingen, Germany
- Department for Primate Cognition, Johann-Friedrich-Blumenbach Institute, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Kaja Wierucka
- Applied Behavioural Ecology and Conservation Lab, Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR
- German Primate Center–Leibniz Institute for Primate Research, Behavioural Ecology and Sociobiology Unit, Göttingen, Germany
| | - Tsz Ching Wong
- Applied Behavioural Ecology and Conservation Lab, Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Annaëlle Surreault-Châble
- Laboratoire Ethologie Cognition Développement, Université Paris Nanterre, Paris, France
- Le PAL, Saint-Pourçain-sur-Besbre, Allier, France
| | - Hannah S. Mumby
- Applied Behavioural Ecology and Conservation Lab, Area of Ecology and Biodiversity, School of Biological Sciences, The University of Hong Kong, Hong Kong, Hong Kong SAR
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12
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Fiedler LS, Daaloul H. An overview of current assessment techniques for evaluating cutaneous perfusion in reconstructive surgery. JOURNAL OF BIOPHOTONICS 2024; 17:e202400002. [PMID: 38596828 DOI: 10.1002/jbio.202400002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/11/2024]
Abstract
This article provides a comprehensive analysis of modern techniques used in the assessment of cutaneous flaps in reconstructive surgery. It emphasizes the importance of preoperative planning and intra- and perioperative assessment of flap perfusion to ensure successful outcomes. Despite technological advancements, direct clinical assessment remains the gold standard. We categorized assessment techniques into non-invasive and invasive modalities, discussing their strengths and weaknesses. Non-invasive methods, such as acoustic Doppler sonography, near-infrared spectroscopy, hyperspectral imaging thermal imaging, and remote-photoplethysmography, offer accessibility and safety but may sacrifice specificity. Invasive techniques, including contrast-enhanced ultrasound, computed tomography angiography, near-infrared fluorescence angiography with indocyanine green, and implantable Doppler probe, provide high accuracy but introduce additional risks. We emphasize the need for a tailored decision-making process based on specific clinical scenarios, patient characteristics, procedural requirements, and surgeon expertise. It also discusses potential future advancements in flap assessment, including the integration of artificial intelligence and emerging technologies.
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Affiliation(s)
- Lukas Sebastian Fiedler
- ENT and Head and Neck Surgery, Plastic Operations, SLK Kliniken Heilbronn, Heilbronn, Germany
- Faculty of Medicine, University of Heidelberg, Heidelberg, Germany
| | - Houda Daaloul
- Department of Neurology, Klinikum Rechts der Isar, Medical Faculty, Technical University of Munich, Munich, Germany
- Caire Health AI GmbH, Munich, Germany
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13
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Aguilera J, Navarrete-de Gálvez E, El Houssaini A, Soto-Lara F, Herrera-Ceballos E, de Gálvez MV. The topical application of different galenic formulations can alter the thermographic images of skin: Limitations for public thermal screening on infection control situations. Am J Infect Control 2024; 52:400-409. [PMID: 37422066 DOI: 10.1016/j.ajic.2023.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/22/2023] [Accepted: 06/22/2023] [Indexed: 07/10/2023]
Abstract
BACKGROUND To analyze whether the application of topical formulas as cosmetics or sunscreens could affect the skin thermographic readings in terms of infection control in pandemic situations. METHODS The temperature of the skin of the dorsal region of the back and the face of 20 volunteers was followed after the application of 6 different types of gels, sunscreens, and make-up under controlled temperature and humidity conditions. High-resolution thermographic images were analyzed to calculate the temperature of treated skin compared to skin free of topical products. RESULTS The application of hydroalcoholic gel resulted in a mean drop of more than 2°C just after 1 minute followed by organic sunscreens until 1.7°C. Recovery was observed progressively until minute 9. Color make-up type formulas, rich in iron oxide as well as sunscreens with mineral filters had little or no effect on the skin thermal response. CONCLUSIONS It is possible to alter the skin temperature almost immediately by using hydroalcoholic gels and sunscreen cosmetics. So, it is possible to produce false negative data in the readings of patients screened thermically.
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Affiliation(s)
- José Aguilera
- Photobiological Dermatology Laboratory Medical Research Centre, Department of Dermatology and Medicine, School of Medicine, University of Malaga, Malaga, Spain.
| | - Enrique Navarrete-de Gálvez
- Project Engineering Area, Department of Graphic Expression Design and Projects, University of Malaga, Malaga, Spain
| | - Ali El Houssaini
- Neurological Rehabilitation Clinic Godeshöhe (Johanniter), Bonn, Germany
| | - Francisco Soto-Lara
- Project Engineering Area, Department of Graphic Expression Design and Projects, University of Malaga, Malaga, Spain
| | - Enrique Herrera-Ceballos
- Photobiological Dermatology Laboratory Medical Research Centre, Department of Dermatology and Medicine, School of Medicine, University of Malaga, Malaga, Spain
| | - María V de Gálvez
- Photobiological Dermatology Laboratory Medical Research Centre, Department of Dermatology and Medicine, School of Medicine, University of Malaga, Malaga, Spain
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14
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Casas-Alvarado A, Ogi A, Villanueva-García D, Martínez-Burnes J, Hernández-Avalos I, Olmos-Hernández A, Mora-Medina P, Domínguez-Oliva A, Mota-Rojas D. Application of Infrared Thermography in the Rehabilitation of Patients in Veterinary Medicine. Animals (Basel) 2024; 14:696. [PMID: 38473082 DOI: 10.3390/ani14050696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/08/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
Infrared Thermography (IRT) has become an assistance tool in medicine and is used to noninvasively evaluate heat elimination during and after inflammatory processes or during the recovery period. However, its application in veterinary patients undergoing physiotherapy is a field that requires deep research. This review aims to analyze the application of IRT in the monitoring of animal physiotherapy, using the thermal changes that are present in patients undergoing gait or lameness issues (e.g., inflammation, pain, increased local temperature) as a neurobiological basis. Rehabilitation techniques such as acupuncture, physical therapies, thermotherapy, photo-biomodulation, and electrostimulation have been reported to have an anti-inflammatory effect that decreases the amount of local heat production, which is heat that can be recorded with IRT. Therefore, IRT could be used as a complementary tool to evaluate the effectiveness of the therapy, and it is suggested that further studies evaluate the accuracy, sensibility, and sensitivity of IRT.
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Affiliation(s)
- Alejandro Casas-Alvarado
- PhD Program in Biological and Health Sciences, [Doctorado en Ciencias Biológicas y de la Salud], Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Asahi Ogi
- Department of Neurobiology and Molecular Medicine, IRCCS Fondazione Stella Maris, 56128 Pisa, Italy
| | - Dina Villanueva-García
- Division of Neonatology, Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico
| | - Julio Martínez-Burnes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Victoria City 87000, Mexico
| | - Ismael Hernández-Avalos
- Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, FESC, Universidad Nacional Autónoma de México (UNAM), Cuautitlán 54714, Mexico
| | - Adriana Olmos-Hernández
- Division of Biotechnology-Bioterio and Experimental Surgery, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City 14389, Mexico
| | - Patricia Mora-Medina
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), Cuautitlán Izcalli 54714, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Daniel Mota-Rojas
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
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15
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Flores N, Centurion F, Zheng J, Baharfar M, Kilani M, Ghasemian MB, Allioux FM, Tang J, Tang J, Kalantar-Zadeh K, Rahim MA. Polyphenol-Mediated Liquid Metal Composite Architecture for Solar Thermoelectric Generation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308346. [PMID: 37924272 DOI: 10.1002/adma.202308346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/27/2023] [Indexed: 11/06/2023]
Abstract
The development of advanced solar energy technologies, which efficiently convert solar energy to heat and then to electricity, remains a significant challenge in the pursuit of clean energy production. Here, this challenge is addressed by designing a photothermal absorber composed of liquid gallium particles and a natural polyphenol-based coordination ink. The design of this composite takes advantage of the tuneable light absorption properties of the polyphenol inks and can also be applied onto flexible substrates. While the ink utilizes two types of coordination complexes to absorb light at different wavelengths, the liquid gallium particles with high thermal and electrical properties provide enhanced thermoelectric effect. As such, the photothermal composite exhibits a broad-spectrum light absorption and highly efficient solar-to-heat conversion. A thermoelectric generator coated with the photothermal composite exhibits an impressive voltage output of ≈185.3 mV when exposed to 1 Sun illumination, without requiring any optical concentration, which sets a new record for a power density at 345.5 µW cm-2 . This work showcases the synergistic combination of natural compound-based light-absorbing coordination complexes with liquid metals to achieve a strong photothermal effect and their integration into thermoelectric devices with powerful light harvesting capabilities.
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Affiliation(s)
- Nieves Flores
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Franco Centurion
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jiewei Zheng
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Mahroo Baharfar
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Mohamed Kilani
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Mohammad B Ghasemian
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Francois-Marie Allioux
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Jianbo Tang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Junma Tang
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Kourosh Kalantar-Zadeh
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
| | - Md Arifur Rahim
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, New South Wales, 2006, Australia
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, New South Wales, 2052, Australia
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16
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Solon IG, Santos WS, Jesus AA, Garcia FS, Nascimento GC, Cárnio EC, Branco LGS, Santos BM. Non-invasive evaluation of vascular permeability in formalin-induced orofacial pain model using infrared thermography. J Therm Biol 2024; 119:103782. [PMID: 38176292 DOI: 10.1016/j.jtherbio.2023.103782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/13/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
Enhanced vascular permeability at the site of injury is a prominent feature in acute inflammatory pain models, commonly assessed through the Evans Blue test. However, this invasive test requires euthanasia, thereby precluding further investigations on the same animal. Due to these limitations, the integration of non-invasive tools such as IRT has been sought. Here, we aimed to evaluate the use of thermography in a common orofacial pain model that employs formalin as a chemical irritant to induce local orofacial inflammation. Male Hannover rats (290-300 g, N = 43) were used. In the first approach, radiometric images were taken before and after formalin administration, assessing temperature changes and extravasated Evans Blue. The second approach included capturing pre- and post-formalin test radiometric images, followed by cytokine measurements in excised vibrissae tissue. Rats were anesthetized for vibrissae tissue collection, allowing correlations between thermographic patterns, nocifensive behavior duration, and cytokine levels in this area. Our findings revealed a positive correlation between local temperature, measured via thermography, and vascular permeability in the contralateral (r2 = 0.3483) and ipsilateral (r2 = 0.4502) side, measured using spectrophotometry. The obtained data supports the notion that thermography-based temperature assessment can effectively evaluate vascular permeability in the orofacial region.
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Affiliation(s)
- Isabelly G Solon
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Wanderson S Santos
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Aline A Jesus
- Department of General and Specialized Nursing Ribeirão Preto, College of Nursing - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Felipe S Garcia
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Glauce C Nascimento
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Evelin C Cárnio
- Department of General and Specialized Nursing Ribeirão Preto, College of Nursing - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Luiz G S Branco
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
| | - Bruna M Santos
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil; Department of General and Specialized Nursing Ribeirão Preto, College of Nursing - University of São Paulo, Ribeirão Preto, SP, Brazil.
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17
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Cooper CE, Withers PC. Implications of heat exchange for a free-living endangered marsupial determined by non-invasive thermal imaging. J Exp Biol 2024; 227:jeb246301. [PMID: 38206870 DOI: 10.1242/jeb.246301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 11/06/2023] [Indexed: 01/13/2024]
Abstract
We used thermal imagining and heat balance modelling to examine the thermal ecology of wild mammals, using the diurnal marsupial numbat (Myrmecobius fasciatus) as a model. Body surface temperature was measured using infra-red thermography at environmental wet and dry bulb temperatures of 11.7-29°C and 16.4-49.3°C, respectively; surface temperature varied for different body parts and with environmental temperature. Radiative and convective heat exchange varied markedly with environmental conditions and for various body surfaces reflecting their shapes, surface areas and projected areas. Both the anterior and posterior dorsolateral body areas functioned as thermal windows. Numbats in the shade had lower rates of solar radiative heat gain but non-solar avenues for radiative heat gain were substantial. Radiative gain was higher for black and lower for white stripes, but overall, the stripes had no thermal role. Total heat gain was generally positive (<4 to >20 W) and often greatly exceeded metabolic heat production (3-6 W). Our heat balance model indicates that high environmental heat loads limit foraging in open areas to as little as 10 min and that climate change may extend periods of inactivity, with implications for future conservation and management. We conclude that non-invasive thermal imaging is informative for modelling heat balance of free-living mammals.
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Affiliation(s)
- Christine E Cooper
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia
- School of Biological Sciences, University of Western Australia, Perth, WA 6009,Australia
| | - Philip C Withers
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia
- School of Biological Sciences, University of Western Australia, Perth, WA 6009,Australia
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18
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Mota-Rojas D, Ogi A, Villanueva-García D, Hernández-Ávalos I, Casas-Alvarado A, Domínguez-Oliva A, Lendez P, Ghezzi M. Thermal Imaging as a Method to Indirectly Assess Peripheral Vascular Integrity and Tissue Viability in Veterinary Medicine: Animal Models and Clinical Applications. Animals (Basel) 2023; 14:142. [PMID: 38200873 PMCID: PMC10777915 DOI: 10.3390/ani14010142] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 12/24/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024] Open
Abstract
Infrared thermography (IRT) is a technique that indirectly assesses peripheral blood circulation and its resulting amount of radiated heat. Due to these properties, thermal imaging is currently applied in human medicine to noninvasively evaluate peripheral vascular disorders such as thrombosis, thromboembolisms, and other ischemic processes. Moreover, tissular damage (e.g., burn injuries) also causes microvasculature compromise. Therefore, thermography can be applied to determine the degree of damage according to the viability of tissues and blood vessels, and it can also be used as a technique to monitor skin transplant procedures such as grafting and free flaps. The present review aims to summarize and analyze the application of IRT in veterinary medicine as a method to indirectly assess peripheral vascular integrity and its relation to the amount of radiated heat and as a diagnostic technique for tissue viability, degree of damage, and wound care.
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Affiliation(s)
- Daniel Mota-Rojas
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 14389, Mexico
| | - Asahi Ogi
- Department of Neurobiology and Molecular Medicine, IRCCS Fondazione Stella Maris, 56128 Pisa, Italy
| | - Dina Villanueva-García
- Division of Neonatology, Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico
| | - Ismael Hernández-Ávalos
- Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, FESC, Universidad Nacional Autónoma de México, Cuautitlán 54714, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 14389, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology of Pain, Behavior and Assessment of Welfare in Domestic Animals, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 14389, Mexico
| | - Pamela Lendez
- Anatomy Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
| | - Marcelo Ghezzi
- Anatomy Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
- Animal Welfare Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
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19
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Zhang H, Fan J, Qu J, Han Q, Zhou H, Song X. Predictive markers for anti-inflammatory treatment response in thyroid eye disease. Front Endocrinol (Lausanne) 2023; 14:1292519. [PMID: 38111706 PMCID: PMC10726127 DOI: 10.3389/fendo.2023.1292519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/15/2023] [Indexed: 12/20/2023] Open
Abstract
Anti-inflammatory treatment is the primary and vital therapeutic approach for active, moderate-to-severe thyroid eye disease (TED). Accurate pretreatment prediction of treatment response is of paramount importance for the prognosis of patients. However, relying solely on the clinical activity score asa determinant of activity has led to unsatisfactory treatment outcomes. In recent years, significant advancements have been made in identifying predictive markers for anti-inflammatory treatment response in TED, clinical markers, body fluid biomarkers and imaging biomarkers. Several clinical studies have developed prediction models based on these markers. However, there is still a lack of comprehensive elucidation or comparison between the different markers. Therefore, this review aims to provide a detailed analysis of the definition, characteristics, and application of predictive markers for anti-inflammatory treatment response in TED. Through detailed literature search, 26 articles applying anti-inflammatory treatment effect prediction with a total of 1948 TED patients were used for analysis and discussion. By gaining a better understanding of the current research on predictive markers, we can accelerate and guide the exploration of treatment prediction strategies, leading us towards an era of precise therapy for TED.
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Affiliation(s)
- Haiyang Zhang
- Department of Ophthalmology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Jingyuan Fan
- Department of Ophthalmology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Jialu Qu
- Department of Ophthalmology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Qinghe Han
- Department of Radiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Huifang Zhou
- Department of Ophthalmology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
| | - Xuefei Song
- Department of Ophthalmology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, China
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20
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Britton S, Davidowitz G. The adaptive role of melanin plasticity in thermally variable environments. J Evol Biol 2023; 36:1811-1821. [PMID: 37916691 DOI: 10.1111/jeb.14243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/16/2023] [Accepted: 09/21/2023] [Indexed: 11/03/2023]
Abstract
Understanding the evolution of adaptive plasticity is fundamental to our knowledge of how organisms interact with their environments and cope with environmental change. Plasticity in melanin pigmentation is common in response to variable environments, especially thermal environments. Yet, the adaptive significance of melanin plasticity in thermally variable environments is often assumed, but rarely explicitly tested. Furthermore, understanding the role of plasticity when a trait is responsive to multiple environmental stimuli and plays many functional roles remains poorly understood. We test the hypothesis that melanin plasticity is an adaptation for thermally variable environments using Hyles lineata, the white-lined sphinx moth, which shows plasticity in melanin pigmentation during the larval stage. Melanin pigmentation influences thermal traits in H. lineata, as melanic individuals had higher heating rates and reached higher body temperatures than non-melanic individuals. Importantly, melanin pigmentation has temperature specific fitness consequences. While melanic individuals had an advantage in cold temperatures, neither phenotype had a clear fitness advantage at warm temperatures. Thus, the costs associated with melanin production may be unrelated to thermal context. Our results highlight the importance of explicitly testing the adaptive role of plasticity and considering all the factors that influence costs and benefits of plastic phenotypes across environments.
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Affiliation(s)
- Sarah Britton
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona, USA
| | - Goggy Davidowitz
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, Arizona, USA
- Department of Entomology, University of Arizona, Tucson, Arizona, USA
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21
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Gujar G, Tiwari M, Yadav N, Monika D. Heat stress adaptation in cows - Physiological responses and underlying molecular mechanisms. J Therm Biol 2023; 118:103740. [PMID: 37976864 DOI: 10.1016/j.jtherbio.2023.103740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 09/04/2023] [Accepted: 10/15/2023] [Indexed: 11/19/2023]
Abstract
Heat stress is a key abiotic stressor for dairy production in the tropics which is further compounded by the ongoing climate change. Heat stress not only adversely impacts the production and welfare of dairy cows but severely impacts the economics of dairying due to production losses and increased cost of rearing. Over the years, selection has ensured development of high producing breeds, however, the thermotolerance ability of animals has been largely overlooked. In the past decade, the ill effects of climate change have made it pertinent to rethink the selection strategies to opt for climate resilient breeds, to ensure optimum production and reproduction. This has led to renewed interest in evaluation of the impacts of heat stress on cows and the underlying mechanisms that results in their acclimatization and adaptation to varied thermal ambience. The understanding of heat stress and associated responses at various level of animal is crucial to device amelioration strategies to secure optimum production and welfare of cows. With this review, an effort has been made to provide an overview on temperature humidity index as an important indicator of heat stress, general effect of heat stress in dairy cows, and impact of heat stress and subsequent response at physiological, haematological, molecular and genetic level of dairy cows.
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Affiliation(s)
- Gayatri Gujar
- Livestock Production Management, Bikaner, Rajasthan, 334001, India.
| | - Manish Tiwari
- Animal Biotechnology, National Dairy Research Institute, Karnal, Haryana, 132001, India
| | - Nistha Yadav
- Department of Animal Genetics and Breeding, College of Veterinary and Animal Science, Bikaner, Rajasthan, 334001, India
| | - Dr Monika
- Veterinary Parasitology, Jaipur, Rajasthan, 302012, India
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22
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Golding D, Rupp KL, Sustar A, Pratt B, Tuthill JC. Snow flies self-amputate freezing limbs to sustain behavior at sub-zero temperatures. Curr Biol 2023; 33:4549-4556.e3. [PMID: 37757830 PMCID: PMC10842534 DOI: 10.1016/j.cub.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/02/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023]
Abstract
Temperature profoundly impacts all living creatures. In spite of the thermodynamic constraints on biology, some animals have evolved to live and move in extremely cold environments. Here, we investigate behavioral mechanisms of cold tolerance in the snow fly (Chionea spp.), a flightless crane fly that is active throughout the winter in boreal and alpine environments of the northern hemisphere. Using thermal imaging, we show that adult snow flies maintain the ability to walk down to an average body temperature of -7°C. At this supercooling limit, ice crystallization occurs within the snow fly's hemolymph and rapidly spreads throughout the body, resulting in death. However, we discovered that snow flies frequently survive freezing by rapidly amputating legs before ice crystallization can spread to their vital organs. Self-amputation of freezing limbs is a last-ditch tactic to prolong survival in frigid conditions that few animals can endure. Understanding the extreme physiology and behavior of snow insects holds particular significance at this moment when their alpine habitats are rapidly changing due to anthropogenic climate change. VIDEO ABSTRACT.
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Affiliation(s)
- Dominic Golding
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Katie L Rupp
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Anne Sustar
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Brandon Pratt
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - John C Tuthill
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA.
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23
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McQueen A, Barnaby R, Symonds MRE, Tattersall GJ. Birds are better at regulating heat loss through their legs than their bills: implications for body shape evolution in response to climate. Biol Lett 2023; 19:20230373. [PMID: 37990562 PMCID: PMC10663788 DOI: 10.1098/rsbl.2023.0373] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/01/2023] [Indexed: 11/23/2023] Open
Abstract
Endotherms use their appendages-such as legs, tails, ears and bills-for thermoregulation by controlling blood flow to near-surface blood vessels, conserving heat when it is cold, and dissipating heat in hot conditions. Larger appendages allow greater heat dissipation, and appendage sizes vary latitudinally according to Allen's rule. However, little is known about the relative importance of different appendages for thermoregulation. We investigate physiological control of heat loss via bird bills and legs using infrared thermography of wild birds. Our results demonstrate that birds are less able to regulate heat loss via their bills than their legs. In cold conditions, birds lower their leg surface temperature to below that of their plumage surface, retaining heat at their core. In warm conditions, birds increase their leg surface temperature to above that of their plumage surface, expelling heat. By contrast, bill surface temperature remains approximately 2°C warmer than the plumage surface, indicating consistent heat loss under almost all conditions. Poorer physiological control of heat loss via bird bills likely entails stronger selection for shorter bills in cold climates. This could explain why bird bills show stronger latitudinal size clines than bird legs, with implications for predicting shape-shifting responses to climate change.
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Affiliation(s)
- Alexandra McQueen
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC 3125, Australia
| | - Ryan Barnaby
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC 3125, Australia
| | - Matthew R. E. Symonds
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC 3125, Australia
| | - Glenn J. Tattersall
- Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, Ontario, Canada L2S 3A1
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24
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López Sanz P, García Vázquez A, Gómez Sánchez ME, Escario Travesedo E. How We Do It: The Role of Infrared Thermography as a Supportive Technique in the Treatment of Hyperhidrosis. Dermatol Surg 2023; 49:1048-1049. [PMID: 37606642 DOI: 10.1097/dss.0000000000003910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Affiliation(s)
- Pablo López Sanz
- Department of Dermatology, Hospital General Universitario de Albacete, Castilla-La Mancha, Spain
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25
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Rodríguez-González D, Guerrero Legarreta I, Chay-Canul A, Hernández-Avalos I, Napolitano F, García-Herrera R, Pereira AMF, Domínguez-Oliva A, Casas-Alvarado A, Reyes-Sotelo B, Mota-Rojas D. Thermal Balance in Male Water Buffaloes Transported by Long and Short Journeys. Animals (Basel) 2023; 13:3274. [PMID: 37893998 PMCID: PMC10603650 DOI: 10.3390/ani13203274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/14/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Transport is a stressor that can cause physiological and metabolic imbalances in livestock, resulting in stress-induced hyperthermia. In water buffaloes, studies regarding the thermal state of animals during mobilization are scarce. Therefore, this study aimed to compare the thermal response of 1516 water buffaloes using infrared thermography (IRT) during 15 short trips (783 animals, 60,291 records, average duration = 50.33 min ± 5.48 min) and 14 long trips (733 animals, 56,441 records, average duration = 13.31 h ± 47.32 min). The surface temperature was assessed in 11 regions (periocular, lacrimal caruncle, nasal, lower eyelid, auricular, frontal-parietal, pelvic limb, torso, abdominal, lumbar, and thoracic) during seven phases from pasture to post-transport. It was found that the surface temperature of the periocular, lacrimal caruncle, nasal, auricular, frontal-parietal, pelvic limb, torso, abdominal, lumbar, and thoracic regions was significantly higher during SJs (+3 °C) when compared to LJs (p < 0.0001). In particular, the frontal-parietal region had a significant increase of 10 °C during the post-transport phase (p < 0.0001) in both groups, recording the highest temperatures during this phase. Likewise, a strong positive significant correlation between the different regions was found (r = 0.90, p < 0.0001). It is worth mentioning that the herding, loading, pre-, and post-transport phases were the ones where the greatest thermal response was recorded, possibly due to the influence of human interaction. Finally, a strong positive correlation (r above 0.9, p > 0.001) between the periocular, lacrimal caruncle, pinna, and pelvic limb was found. According to the results, SJ could be considered a stressful event that hinders thermal generation, contrarily to LJ.
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Affiliation(s)
- Daniela Rodríguez-González
- Master in Science Program [Maestría en Ciencias Agropecuarias], Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City 04960, Mexico
| | - Isabel Guerrero Legarreta
- Department of Biotechnology: Food Science, Universidad Autónoma Metropolitana, Iztapalapa Campus (UAM-I), Mexico City 09340, Mexico
| | - Alfonso Chay-Canul
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa 86040, Mexico
| | - Ismael Hernández-Avalos
- Department of Biological Science, FESC, Universidad Nacional Autónoma de México (UNAM), Cuautitlán 04510, Mexico
| | - Fabio Napolitano
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy
| | - Ricardo García-Herrera
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa 86040, Mexico
| | - Alfredo M. F. Pereira
- Mediterranean Institute for Agriculture, Environment and Development (MED), Institute for Advanced Studies and Research, Universidade de Évora, 7006-554 Évora, Portugal
| | - Adriana Domínguez-Oliva
- Neurophysiology, Behavior, and Animal Welfare Assessment, Department of Animal Production and Agriculture (DPAA), Universidad Autónoma Metropolitana (UAM) Xochimilco Campus, Mexico City 04960, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behavior, and Animal Welfare Assessment, Department of Animal Production and Agriculture (DPAA), Universidad Autónoma Metropolitana (UAM) Xochimilco Campus, Mexico City 04960, Mexico
| | - Brenda Reyes-Sotelo
- Neurophysiology, Behavior, and Animal Welfare Assessment, Department of Animal Production and Agriculture (DPAA), Universidad Autónoma Metropolitana (UAM) Xochimilco Campus, Mexico City 04960, Mexico
| | - Daniel Mota-Rojas
- Neurophysiology, Behavior, and Animal Welfare Assessment, Department of Animal Production and Agriculture (DPAA), Universidad Autónoma Metropolitana (UAM) Xochimilco Campus, Mexico City 04960, Mexico
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26
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Jerem P, Romero LM. It's cool to be stressed: body surface temperatures track sympathetic nervous system activation during acute stress. J Exp Biol 2023; 226:jeb246552. [PMID: 37767773 PMCID: PMC10629684 DOI: 10.1242/jeb.246552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/24/2023] [Indexed: 09/29/2023]
Abstract
The acute stress response can be considered the primary evolutionary adaptation to maximise fitness in the face of unpredictable environmental challenges. However, the difficulties of assessing physiology in natural environments mean that comparatively little is known about how response variation influences fitness in free-living animals. Currently, determining acute stress physiology typically involves blood sampling or cardiac monitoring. Both require trapping and handling, interrupting natural behaviour, and potentially biasing our understanding toward trappable species/individuals. Importantly, limits on repeated sampling also restrict response phenotype characterisation, vital for linking stress with fitness. Surface temperature dynamics resulting from peripheral vasomotor activity during acute stress are increasingly promoted as alternative physiological stress indicators, which can be measured non-invasively using infrared thermal imaging, overcoming many limitations of current methods. Nonetheless, which aspects of stress physiology they represent remains unclear, as the underlying mechanisms are unknown. To date, validations have primarily targeted the hypothalamic-pituitary-adrenal axis, when the sympathetic-adrenal-medullary (SAM) system is likely the primary driver of vasomotor activity during acute stress. To address this deficit, we compared eye and bill region surface temperatures (measured using thermal imaging) with SAM system activity (measured as heart rate variability via electrocardiogram telemetry) in wild-caught captive house sparrows (Passer domesticus) during capture and handling. We found that lower body surface temperatures were associated with increased sympathetic nervous system activation. Consequently, our data confirm that body surface temperatures can act as a proxy for sympathetic activation during acute stress, providing potentially transformative opportunities for linking the acute stress response with fitness in the wild.
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Affiliation(s)
- Paul Jerem
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, 9700 CC Groningen, The Netherlands
- Department of Biology, Tufts University, Medford, MA 02155, USA
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27
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Napolitano F, De Rosa G, Chay-Canul A, Álvarez-Macías A, Pereira AMF, Bragaglio A, Mora-Medina P, Rodríguez-González D, García-Herrera R, Hernández-Ávalos I, Domínguez-Oliva A, Pacelli C, Sabia E, Casas-Alvarado A, Reyes-Sotelo B, Braghieri A. The Challenge of Global Warming in Water Buffalo Farming: Physiological and Behavioral Aspects and Strategies to Face Heat Stress. Animals (Basel) 2023; 13:3103. [PMID: 37835709 PMCID: PMC10571975 DOI: 10.3390/ani13193103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/01/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Water buffaloes have morphological and behavioral characteristics for efficient thermoregulation. However, their health, welfare, and productive performance can be affected by GW. The objective of this review was to analyze the adverse effects of GW on the productive behavior and health of water buffaloes. The physiological, morphological, and behavioral characteristics of the species were discussed to understand the impact of climate change and extreme meteorological events on buffaloes' thermoregulation. In addition, management strategies in buffalo farms, as well as the use of infrared thermography as a method to recognize heat stress in water buffaloes, were addressed. We concluded that heat stress causes a change in energy mobilization to restore animal homeostasis. Preventing hyperthermia limits the physiological, endocrine, and behavioral changes so that they return to thermoneutrality. The use of fans, sprinklers, foggers, and natural sources of water are appropriate additions to current buffalo facilities, and infrared thermography could be used to monitor the thermal states of water buffaloes.
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Affiliation(s)
- Fabio Napolitano
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università Degli Studi della Basilicata, 85100 Potenza, Italy (C.P.)
| | - Giuseppe De Rosa
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy;
| | - Alfonso Chay-Canul
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa 86025, Mexico
| | - Adolfo Álvarez-Macías
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico; (A.Á.-M.)
| | - Alfredo M. F. Pereira
- Mediterranean Institute for Agriculture, Environment and Development (MED), Institute for Advanced Studies and Research, Universidade de Évora, 7006-554 Évora, Portugal;
| | - Andrea Bragaglio
- Consiglio per la Ricerca in Agricoltura e l’Analisi Dell’Economia Agraria (CREA), Research Centre for Engineering and Food Processing, Via Milano 43, 24047 Treviglio, Italy;
| | - Patricia Mora-Medina
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), FESC, Ciudad de México 04510, Mexico
| | - Daniela Rodríguez-González
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico; (A.Á.-M.)
| | - Ricardo García-Herrera
- División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Villahermosa 86025, Mexico
| | - Ismael Hernández-Ávalos
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), FESC, Ciudad de México 04510, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico; (A.Á.-M.)
| | - Corrado Pacelli
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università Degli Studi della Basilicata, 85100 Potenza, Italy (C.P.)
| | - Emilio Sabia
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università Degli Studi della Basilicata, 85100 Potenza, Italy (C.P.)
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico; (A.Á.-M.)
| | - Brenda Reyes-Sotelo
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico; (A.Á.-M.)
| | - Ada Braghieri
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università Degli Studi della Basilicata, 85100 Potenza, Italy (C.P.)
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de Amaral M, Von Dentz MC, Ressel Simões LA, Vogt É, Heiermann D, Fischer P, Colombo P, Kucharski LC. Metabolic changes in the subtropical frog Boana pulchella during experimental cooling and recovery conditions. J Therm Biol 2023; 117:103705. [PMID: 37714110 DOI: 10.1016/j.jtherbio.2023.103705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/17/2023]
Abstract
Frogs have developed biochemical and physiological adaptations to occupy diverse ecological niches on Earth successfully. Survival in frozen states is a fascinating strategy made possible by evolving adaptations to produce cryoprotectant solutes. The hylid frog Boana pulchella thrives in South American regions with cold climates, remaining active while enduring sporadic subzero temperatures during winter. The species' metabolic changes during subzero exposure remain unclear. Therefore, we exposed B. pulchella to cooling and recovery, assessing plasma and tissue metabolite changes. Cooling significantly reduced urea concentrations in plasma (P = 0.033), muscle (P = 0.001), heart (P = 0.009), and brain (P = 0.041) compared to acclimation. Liver glucose oxidation and glycogen synthesis were lower in cooling and recovery than in acclimation (P < 0.0001 and P = 0.0117, respectively). Muscle glycogen synthesis was lower in recovery than acclimation (P = 0.0249). These results demonstrate B. pulchella's physiological strategies during subzero exposure, likely reflecting species-specific evolutionary adaptations for brief subzero exposures that enable winter survival in its natural habitat.
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Affiliation(s)
- Marjoriane de Amaral
- Laboratory of Metabolism and Comparative Endocrinology, Department of Physiology, Federal University of Rio Grande do Sul, Ramiro Barcelos 2600, 90035003, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Maiza Cristina Von Dentz
- Laboratory of Metabolism and Comparative Endocrinology, Department of Physiology, Federal University of Rio Grande do Sul, Ramiro Barcelos 2600, 90035003, Porto Alegre, Rio Grande do Sul, Brazil
| | - Leonardo Airton Ressel Simões
- Laboratory of Metabolism and Comparative Endocrinology, Department of Physiology, Federal University of Rio Grande do Sul, Ramiro Barcelos 2600, 90035003, Porto Alegre, Rio Grande do Sul, Brazil
| | - Éverton Vogt
- Laboratory of Metabolism and Comparative Endocrinology, Department of Physiology, Federal University of Rio Grande do Sul, Ramiro Barcelos 2600, 90035003, Porto Alegre, Rio Grande do Sul, Brazil
| | - Dener Heiermann
- Museum of Natural Sciences of the Secretariat of Environment and Infrastructure of Rio Grande do Sul (SEMA), FZB, Department of Herpetology/Amphibians, Doutor Salvador França, 90690000, Porto Alegre, Rio Grande do Sul, Brazil
| | - Pedro Fischer
- Museum of Natural Sciences of the Secretariat of Environment and Infrastructure of Rio Grande do Sul (SEMA), FZB, Department of Herpetology/Amphibians, Doutor Salvador França, 90690000, Porto Alegre, Rio Grande do Sul, Brazil
| | - Patrick Colombo
- Museum of Natural Sciences of the Secretariat of Environment and Infrastructure of Rio Grande do Sul (SEMA), FZB, Department of Herpetology/Amphibians, Doutor Salvador França, 90690000, Porto Alegre, Rio Grande do Sul, Brazil
| | - Luiz Carlos Kucharski
- Laboratory of Metabolism and Comparative Endocrinology, Department of Physiology, Federal University of Rio Grande do Sul, Ramiro Barcelos 2600, 90035003, Porto Alegre, Rio Grande do Sul, Brazil
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Wongsaengchan C, McCafferty DJ, Lennox K, Nager RG, McKeegan DEF. Non-invasive assessment of positive affective state using infra-red thermography in rats. Anim Welf 2023; 32:e66. [PMID: 38510988 PMCID: PMC10951672 DOI: 10.1017/awf.2023.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/27/2023] [Accepted: 08/16/2023] [Indexed: 03/22/2024]
Abstract
With recent increased focus on positive welfare in animal welfare science, there is demand for objective positive welfare indicators. It is unclear whether changes in body surface temperature can be used to non-invasively identify and quantify positive states in mammals. We recorded continuous measurements of tail surface temperature using infra-red thermography (IRT) and concurrent behavioural observations in male and female Wistar rats (Rattus norvegicus). If tail surface temperature can differentiate between positive and negative experiences, we expect a qualitatively different response compared to negative experiences. Three groups of rats were presented with increasing magnitudes of food rewards (neutral/none, one and three rewards). The rats were placed in an arena to which they were habituated and filmed for 30 s before and 30 min after exposure to different rewards. Tail temperature initially decreased from the pre-reward baseline and subsequently returned towards baseline temperature. The overall pattern of the change was the same as for rats subjected to negative stimuli in previous studies. Nevertheless, dynamic changes in tail temperature, specifically the rate of recovery and the behavioural response (exploration), differed between neutral and rewarded rats but failed to distinguish reward magnitude. Sex differences were found in both thermal and behavioural responses, unrelated to reward magnitudes. Female rats exhibited a greater initial response with a slower recovery than male rats, emphasising the value of using of both sexes in animal welfare research. This study improves our understanding of the effects of positive emotions induced by food reward on peripheral body temperature and behaviour.
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Affiliation(s)
- Chanakarn Wongsaengchan
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, GlasgowG12 8QQ, UK
- School of Psychology & Neuroscience, University of St Andrews, St Andrews, KY16 9JP, UK
| | - Dominic J McCafferty
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, GlasgowG12 8QQ, UK
| | - Katie Lennox
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, GlasgowG12 8QQ, UK
| | - Ruedi G Nager
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, GlasgowG12 8QQ, UK
| | - Dorothy EF McKeegan
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, GlasgowG12 8QQ, UK
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Cichosz P, Karolczak P, Waszczuk K. Review of Cutting Temperature Measurement Methods. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6365. [PMID: 37834502 PMCID: PMC10573455 DOI: 10.3390/ma16196365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023]
Abstract
During the cutting process, large quantities of emitted heat are concentrated on a small surface area of the interface between the workpiece and the cutting edge. The resultant very high temperature significantly affects the tool life. Knowledge of maximum temperatures to be expected on the cutting edges is important, as it allows the cutting conditions to be adjusted in such a manner that the critical value of thermal resistance is not exceeded for the cutting material. In effect, the maximum effectiveness of the working process is maintained. This article offers a systematic presentation of methods used in cutting temperature measurements. It discusses their advantages and disadvantages, as well as the usefulness of the individual methods in different types of machining processes. It also points to the possibility of methodological errors which significantly reduce measurement accuracy. The above issues are believed to justify a discussion of different cutting temperature measurement methods. The conclusions here presented may be of particular importance to researchers interested in the field, especially in high-efficiency machining, new cutting materials and cutting-edge protective coatings, as well as various methods for cutting fluid applications. They may allow a more informed selection of measurement methods most suitable for particular situations.
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Affiliation(s)
| | | | - Kamil Waszczuk
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, St. Łukasiewicza 5, 50-371 Wrocław, Poland; (P.C.); (P.K.)
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31
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Morales-Hernandez AG, Martinez-Aguilar V, Chavez-Gonzalez TM, Mendez-Avila JC, Frias-Becerril JV, Morales-Hernandez LA, Cruz-Albarran IA. Short-Term Thermal Effect of Continuous Ultrasound from 3 MHz to 1 and 0.5 W/cm 2 Applied to Gastrocnemius Muscle. Diagnostics (Basel) 2023; 13:2644. [PMID: 37627903 PMCID: PMC10453025 DOI: 10.3390/diagnostics13162644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Continuous ultrasound is recognized for its thermal effect and use in the tissue repair process. However, there is controversy about its dosage and efficacy. This study used infrared thermography, a non-invasive technique, to measure the short-term thermal effect of 3 MHz continuous ultrasound vs. a placebo, referencing the intensity applied. It was a single-blind, randomized clinical trial of 60 healthy volunteers (19-24 years old) divided into three equal groups. Group 1:1 W/cm2 for 5 min; Group 2: 0.5 W/cm2 for 10 min; and Group 3: the placebo for 5 min. The temperature was recorded through five thermographic images per patient: pre- and post-application, 5, 10, and 15 min later. After statistical analysis, a more significant decrease in temperature (p<0.05 ) was observed in the placebo group compared with the remaining groups after the application of continuous ultrasound. Group 1 was the one that generated the highest significant thermal effect (p<0.001), with an increase of 3.05 °C at 15 min, compared with the other two groups. It is concluded that to generate a thermal effect in the muscle, intensities of ≥1 W/cm2 are required, since the dosage maintained a temperature increase for more than 5 min.
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Affiliation(s)
- Arely G. Morales-Hernandez
- Faculty of Nursing, Autonomous University of Queretaro, Queretaro 76010, Mexico
- Education, Movement and Health, Faculty of Nursing, Autonomous University of Queretaro, Queretaro 76010, Mexico
| | - Violeta Martinez-Aguilar
- Faculty of Nursing, Autonomous University of Queretaro, Campus Corregidora, Queretaro 76912, Mexico
| | | | - Julio C. Mendez-Avila
- Faculty of Nursing, Autonomous University of Queretaro, Queretaro 76010, Mexico
- Education, Movement and Health, Faculty of Nursing, Autonomous University of Queretaro, Queretaro 76010, Mexico
| | | | - Luis A. Morales-Hernandez
- Laboratory of Artificial Vision and Thermography/Mechatronics, Faculty of Engineering, Autonomous University of Queretaro, Campus San Juan del Rio, San Juan del Río 76807, Mexico
| | - Irving A. Cruz-Albarran
- Faculty of Nursing, Autonomous University of Queretaro, Queretaro 76010, Mexico
- Laboratory of Artificial Vision and Thermography/Mechatronics, Faculty of Engineering, Autonomous University of Queretaro, Campus San Juan del Rio, San Juan del Río 76807, Mexico
- Artificial Intelligence Systems Applied to Biomedical and Mechanical Models, Faculty of Engineering, Autonomus University of Queretaro, Campus San Juan del Rio, San Juan del Rio 76807, Mexico
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Cardinale-Villalobos L, Jimenez-Delgado E, García-Ramírez Y, Araya-Solano L, Solís-García LA, Méndez-Porras A, Alfaro-Velasco J. IoT System Based on Artificial Intelligence for Hot Spot Detection in Photovoltaic Modules for a Wide Range of Irradiances. SENSORS (BASEL, SWITZERLAND) 2023; 23:6749. [PMID: 37571532 PMCID: PMC10422287 DOI: 10.3390/s23156749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/15/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Infrared thermography (IRT) is a technique used to diagnose Photovoltaic (PV) installations to detect sub-optimal conditions. The increase of PV installations in smart cities has generated the search for technology that improves the use of IRT, which requires irradiance conditions to be greater than 700 W/m2, making it impossible to use at times when irradiance goes under that value. This project presents an IoT platform working on artificial intelligence (AI) which automatically detects hot spots in PV modules by analyzing the temperature differentials between modules exposed to irradiances greater than 300 W/m2. For this purpose, two AI (Deep learning and machine learning) were trained and tested in a real PV installation where hot spots were induced. The system was able to detect hot spots with a sensitivity of 0.995 and an accuracy of 0.923 under dirty, short-circuited, and partially shaded conditions. This project differs from others because it proposes an alternative to facilitate the implementation of diagnostics with IRT and evaluates the real temperatures of PV modules, which represents a potential economic saving for PV installation managers and inspectors.
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Affiliation(s)
| | - Efren Jimenez-Delgado
- School of Computer Engineering, Costa Rica Institute of Technology, Cartago 159-7050, Costa Rica
| | - Yariel García-Ramírez
- School of Electronic Engineering, Costa Rica Institute of Technology, Cartago 159-7050, Costa Rica
| | - Luis Araya-Solano
- School of Physics, Costa Rica Institute of Technology, Cartago 159-7050, Costa Rica
| | | | - Abel Méndez-Porras
- School of Computer Engineering, Costa Rica Institute of Technology, Cartago 159-7050, Costa Rica
| | - Jorge Alfaro-Velasco
- School of Computer Engineering, Costa Rica Institute of Technology, Cartago 159-7050, Costa Rica
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Mota-Rojas D, Braghieri A, Ghezzi M, Ceriani MC, Martínez-Burnes J, Lendez PA, Pereira AMF, Lezama-García K, Domínguez-Oliva A, Casas-Alvarado A, Sabia E, Pacelli C, Napolitano F. Strategies and Mechanisms of Thermal Compensation in Newborn Water Buffaloes. Animals (Basel) 2023; 13:2161. [PMID: 37443964 PMCID: PMC10340076 DOI: 10.3390/ani13132161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/23/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Hypothermia is one of the principal causes of perinatal mortality in water buffaloes and can range from 3% to 17.9%. In ruminants, factors affecting hypothermia in newborns may be of intrinsic (e.g., level of neurodevelopment, birth weight, vitality score, amount of brown fat, skin features) or extrinsic origin (e.g., maternal care, environmental conditions, colostrum consumption). When newborn buffaloes are exposed to cold stress, thermoregulatory mechanisms such as peripheral vasoconstriction and shivering and non-shivering thermogenesis are activated to prevent hypothermia. Due to the properties of infrared thermography (IRT), as a technique that detects vasomotor changes triggered by a reduction in body temperature, evaluating the central and peripheral regions in newborn buffaloes is possible. This review aims to analyze behavioral, physiological, and morphological strategies and colostrum consumption as thermal compensation mechanisms in newborn water buffalo to cope with environmental changes affecting thermoneutrality. In addition, the importance of monitoring by IRT to identify hypothermia states will be highlighted. Going deeper into these topics related to the water buffalo is essential because, in recent years, this species has become more popular and is being bred in more geographic areas.
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Affiliation(s)
- Daniel Mota-Rojas
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Ada Braghieri
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy
| | - Marcelo Ghezzi
- Animal Welfare Area, Faculty of Veterinary Sciences (FCV), Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), University Campus, Tandil 7000, Argentina
| | - María Carolina Ceriani
- Faculty of Veterinary Sciences, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), Tandil, Veterinary Research Center (CIVETAN), CONICET-CICPBA, Arroyo Seco S/N, Campus Universitario, Tandil 7000, Argentina
| | - Julio Martínez-Burnes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Victoria City 87000, Mexico
| | - Pamela Anahí Lendez
- Faculty of Veterinary Sciences, Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), Tandil, Veterinary Research Center (CIVETAN), CONICET-CICPBA, Arroyo Seco S/N, Campus Universitario, Tandil 7000, Argentina
| | - Alfredo M. F. Pereira
- Mediterranean Institute for Agriculture, Environment and Development (MED), Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal
| | - Karina Lezama-García
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
| | - Emilio Sabia
- School of Agricultural, Forest, Food, and Environmental Sciences, University of Basilicata, 85100 Potenza, Italy
| | - Corrado Pacelli
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy
| | - Fabio Napolitano
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, 85100 Potenza, Italy
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Whittaker AL, Muns R, Wang D, Martínez-Burnes J, Hernández-Ávalos I, Casas-Alvarado A, Domínguez-Oliva A, Mota-Rojas D. Assessment of Pain and Inflammation in Domestic Animals Using Infrared Thermography: A Narrative Review. Animals (Basel) 2023; 13:2065. [PMID: 37443863 DOI: 10.3390/ani13132065] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/17/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Pain assessment in domestic animals has gained importance in recent years due to the recognition of the physiological, behavioral, and endocrine consequences of acute pain on animal production, welfare, and animal model validity. Current approaches to identifying acute pain mainly rely on behavioral-based scales, quantifying pain-related biomarkers, and the use of devices monitoring sympathetic activity. Infrared thermography is an alternative that could be used to correlate the changes in the superficial temperature with other tools and thus be an additional or alternate acute pain assessment marker. Moreover, its non-invasiveness and the objective nature of its readout make it potentially very valuable. However, at the current time, it is not in widespread use as an assessment strategy. The present review discusses scientific evidence for infrared thermography as a tool to evaluate pain, limiting its use to monitor acute pain in pathological processes and invasive procedures, as well as its use for perioperative monitoring in domestic animals.
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Affiliation(s)
- Alexandra L Whittaker
- School of Animal and Veterinary Sciences, Roseworthy Campus, University of Adelaide, Roseworthy, SA 5116, Australia
| | - Ramon Muns
- Agri-Food and Biosciences Institute, Hillsborough, Co Down BT 26 6DR, Northern Ireland, UK
| | - Dehua Wang
- School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Julio Martínez-Burnes
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Tamaulipas, Victoria City 87000, Mexico
| | - Ismael Hernández-Ávalos
- Clinical Pharmacology and Veterinary Anesthesia, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), Cuautitlán 54714, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behaviour and Animal Welfare Assessment, DPAA, Xochimilco Campus, Universidad Autónoma Metropolitana, Mexico City 04960, Mexico
| | - Adriana Domínguez-Oliva
- Agri-Food and Biosciences Institute, Hillsborough, Co Down BT 26 6DR, Northern Ireland, UK
- Neurophysiology, Behaviour and Animal Welfare Assessment, DPAA, Xochimilco Campus, Universidad Autónoma Metropolitana, Mexico City 04960, Mexico
| | - Daniel Mota-Rojas
- Neurophysiology, Behaviour and Animal Welfare Assessment, DPAA, Xochimilco Campus, Universidad Autónoma Metropolitana, Mexico City 04960, Mexico
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Tu M, Wu X, Qu S, Jin J, Chen N, Xiong S, Pei S, Li X, Shi Y, Hu H, Li X, Fang J, Shao X. The effective on intradermal acupuncture based on changes in biological specificity of acupoints for major depressive disorder: study protocol of a prospective, multicenter, randomized, controlled trial. Front Psychiatry 2023; 14:1183127. [PMID: 37441145 PMCID: PMC10335768 DOI: 10.3389/fpsyt.2023.1183127] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/22/2023] [Indexed: 07/15/2023] Open
Abstract
Background Antidepressants still have some side effects in treating major depressive disorder (MDD), and acupuncture therapy is a complementary therapy of research interest for MDD. Acupoints are sensitive sites for disease response and stimulation points for acupuncture treatment. Prior studies suggest that the biological specificity of acupoints is altered in physiological and pathological situations. Therefore, we hypothesize that the biological specificity of acupoints is associated with the diagnosis of MDD and that stimulating acupoints with significant biological specificity can achieve a better therapeutic effect than clinical common acupoints. This study aims to investigate the efficacy and safety of intradermal acupuncture (IA) treatment for MDD based on changes in the biological specificity of acupoints. Methods The first part of the study will enroll 30 MDD patients and 30 healthy control (HC) participants to assess pain sensitivity and thermal specificity of MDD-related acupoints using a pressure pain threshold gauge (PTG) and infrared thermography (IRT). The potentially superior acupoints for treating MDD will be selected based on the results of PTG and IRT tests and referred to as pressure pain threshold strong response acupoints (PSA) and temperature strong response acupoints (TSA).The second part of the study will enroll 120 eligible MDD patients randomly assigned to waiting list (WL) group, clinical common acupoint (CCA) group, TSA group, and PSA group in a 1:1:1:1 ratio. The change in the Patient Health Questionnaire-9 Items (PHQ-9), the MOS item short-form health survey (SF-36), pressure pain threshold, temperature of acupoints, and adverse effects will be observed. The outcomes of PHQ-9 and SF-36 measures will be assessed before intervention, at 3 and 6 weeks after intervention, and at a 4-week follow-up. The biological specificity of acupoint measures will be assessed before intervention and at 6 weeks after intervention. All adverse effects will be assessed. Discussion This study will evaluate the therapeutic effect and safety of IA for MDD based on changes in the biological specificity of acupoints. It will investigate whether there is a correlation between the biological specificity of MDD-related acupoints and the diagnosis of MDD and whether stimulating strong response acupoints is superior to clinical common acupoints in the treatment of MDD. The study's results may provide insights into the biological mechanisms of acupuncture and its potential as a complementary therapy for MDD. Clinical Trial Registration ClinicalTrials.gov, identifier: NCT05524519.
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Affiliation(s)
- Mingqi Tu
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaoting Wu
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Siying Qu
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Junyan Jin
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Nisang Chen
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Sangsang Xiong
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shuangyi Pei
- The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Xinwei Li
- Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Yan Shi
- Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hantong Hu
- The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaoyu Li
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jianqiao Fang
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaomei Shao
- Key Laboratory for Research of Acupuncture Treatment and Transformation of Emotional Diseases, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
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Rodríguez-González D, Guerrero Legarreta I, Cruz-Monterrosa RG, Napolitano F, Titto CG, Abd El-Aziz AH, Hernández-Avalos I, Casas-Alvarado A, Domínguez-Oliva A, Mota-Rojas D. Assessment of thermal changes in water buffalo mobilized from the paddock and transported by short journeys. Front Vet Sci 2023; 10:1184577. [PMID: 37252398 PMCID: PMC10217363 DOI: 10.3389/fvets.2023.1184577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 04/24/2023] [Indexed: 05/31/2023] Open
Abstract
Evaluating the welfare of buffaloes during transport is key to obtaining and commercializing high-quality meat products; however, effective assessments require recognizing several stressors that activate physiological mechanisms that can have repercussions on the health and productive performance of species. The aim of this study was to evaluate the surface temperatures of different body and head regions in this species during events prior, and posterior, to transport for short periods; that is, from paddock to loading. The second goal was to determine the level of correlation between thermal windows. This study used infrared thermography (IRT) to evaluate the surface temperature of 624 water buffaloes (Buffalypso breed) during 12 short trips (average duration = 2 h ± 20 min) by focusing on 11 regions of the body (Regio corporis), in the head regions (Regiones capitis) the face regions (Regiones faciei), Orbital region (Regio orbitalis) with special attention to structures such as the lacrimal caruncle, periocular area and lower eyelid (Regio palpebralis inferior); nasal region (Regio nasalis) with special attention to nostril thermal window; and regions of the skull (Regiones cranii) such as auricular region (Regio auricularis) with special attention to auditory canal and frontal-parietal region (Regio frontalis-parietalis) and trunk region (Truncus regionis) such as thoracic and abdominal regions, regions of the vertebral column (Columna vertebralis) with the thoracic vertebral region (Regio vertebralis thoracis) and lumbar region (Regio lumbalis); and regions of the pelvis limb (Regiones membri pelvini). Recordings were made during seven phases: paddock (P1), herding (P2), corral (P3), chute handling (P4), shipping (P5), pre- (P6), and post-transport (P7). A total of 48,048 readings were obtained from 11 thermal windows. The results showed that the surface temperatures of the windows increased by as much as 5°C during P2, P3, P5, P6, and P7 compared to P1 and P4 (p < 0.0001). Differences of at least 1°C were also observed between thermal windows in the craniofacial, lateral corporal, and peripheral zones (p < 0.0001). Finally, a strong positive correlation (r = 0.9, p < 0.0001) was found between the thermal windows. These findings lead to the conclusion that the surface temperature of the craniofacial and corporal regions of buffaloes transported for short periods varied in relation to the phase of mobilization (from paddock to post-transport), likely as a response to stressful factors, since herding and loading increased the thermal values in each window. The second conclusion is that there are strong positive correlations between central and peripheral thermal windows.
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Affiliation(s)
- Daniela Rodríguez-González
- Master’s Program in Agricultural and Livestock Sciences [Maestría en Ciencias Agropecuarias], Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City, Mexico
| | - Isabel Guerrero Legarreta
- Department of Biotechnology: Food Science, Universidad Autónoma Metropolitana, Iztapalapa Campus (UAM-I), Mexico City, Mexico
| | - Rosy G. Cruz-Monterrosa
- Department of Food Science, Universidad Autónoma Metropolitana (UAM-L), Campus Lerma, Lerma City, Mexico
| | - Fabio Napolitano
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, Potenza, Italy
| | - Cristiane Gonçalves Titto
- Laboratório de Biometeorologia e Etologia, Faculdade de Zootecnia e Engenharia de Alimentos, FZEA-USP, Universidade de São Paulo, Pirassununga, Brazil
| | - Ayman H. Abd El-Aziz
- Animal Husbandry and Animal Wealth Development Department, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
| | - Ismael Hernández-Avalos
- Department of Biological Science, FESC, Universidad Nacional Autónoma de México (UNAM), Cuautitlán Izcalli, Mexico
| | - Alejandro Casas-Alvarado
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City, Mexico
| | - Adriana Domínguez-Oliva
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City, Mexico
| | - Daniel Mota-Rojas
- Neurophysiology, Behavior and Animal Welfare Assessment, DPAA, Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City, Mexico
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De Marziani L, Boffa A, Orazi S, Andriolo L, Di Martino A, Zaffagnini S, Filardo G. Joint Response to Exercise Is Affected by Knee Osteoarthritis: An Infrared Thermography Analysis. J Clin Med 2023; 12:jcm12103399. [PMID: 37240505 DOI: 10.3390/jcm12103399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/12/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Infrared thermography can be used to evaluate the inflammation characterizing the joint environment of OA knees, but there is limited evidence on the response to physical exercise. Identifying the response to exercise of OA knees and the influencing variables could provide important information to better profile patients with different knee OA patterns. Sixty consecutive patients (38 men/22 women, 61.4 ± 9.2 years) with symptomatic knee OA were enrolled. Patients were evaluated with a standardized protocol using a thermographic camera (FLIR-T1020) positioned at 1 m with image acquisition of an anterior view at baseline, immediately after, and at 5 min after a 2-min knee flexion-extension exercise with a 2 kg anklet. Patients' demographic and clinical characteristics were documented and correlated with the thermographic changes. This study demonstrated that the temperature response to exercise in symptomatic knee OA was affected by some demographic and clinical characteristics of the assessed patients. Patients with a poor clinical knee status presented with a lower response to exercise, and women showed a greater temperature decrease than men. Not all evaluated ROIs showed the same trend, which underlines the need to specifically study the different joint subareas to identify the inflammatory component and joint response while investigating knee OA patterns.
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Affiliation(s)
- Luca De Marziani
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Angelo Boffa
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Simone Orazi
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Luca Andriolo
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Alessandro Di Martino
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Stefano Zaffagnini
- Clinica Ortopedica e Traumatologica 2, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Giuseppe Filardo
- Applied and Translational Research (ATR) Center, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
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38
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Holanda AGA, Cortez DEA, Queiroz GFD, Matera JM. Applicability of thermography for cancer diagnosis in small animals. J Therm Biol 2023; 114:103561. [PMID: 37344014 DOI: 10.1016/j.jtherbio.2023.103561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 06/23/2023]
Abstract
Medical thermography is an imaging test used to monitor skin surface temperature. Although it is not a recent technique, significant advances have been made since the 2000s with the equipment modernization, leading to its popularization. In cancer diagnosis, the application of thermography is supported by the difference in thermal distribution between neoplastic processes and adjacent healthy tissue. The mechanisms involved in heat production by cancer cells include neoangiogenesis, increased metabolic rate, vasodilation, and the release of nitric oxide and pro-inflammatory substances. Currently, thermography has been widely studied in humans as a screening tool for skin and breast cancer, with positive results. In veterinary medicine, the technique has shown promise and has been described for skin and soft tissue tumors in felines, mammary gland tumors, osteosarcoma, mast cell tumors, and perianal tumors in dogs. This review discusses the fundamentals of the technique, monitoring conditions, and the role of thermography as a complementary diagnostic tool for cancer in veterinary medicine, as well as future perspectives for improvement.
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Affiliation(s)
| | | | | | - Julia Maria Matera
- Department of Surgery, Faculty of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
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Ortiz-Álvarez J, Monserrat-García MT, Gimeno-Castillo J, Conejo-Mir Sánchez J. Thermography for the follow-up of skin and soft tissue infections. ENFERMEDADES INFECCIOSAS Y MICROBIOLOGIA CLINICA (ENGLISH ED.) 2023:S2529-993X(23)00106-5. [PMID: 37085443 DOI: 10.1016/j.eimce.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 04/23/2023]
Affiliation(s)
- Juan Ortiz-Álvarez
- Servicio de Dermatología, Hospital Universitario Virgen del Rocío, Sevilla, Spain.
| | | | | | - Julián Conejo-Mir Sánchez
- Servicio de Dermatología, Hospital Universitario Virgen del Rocío, Sevilla, Spain; Departamento de Medicina, Universidad de Sevilla, Sevilla, Spain
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40
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Hoffman A, Long N, Carroll J, Sanchez NB, Broadway P, Richeson J, Jackson T, Hales K. Infrared thermography as an alternative technique for measuring body temperature in cattle. APPLIED ANIMAL SCIENCE 2023. [DOI: 10.15232/aas.2022-02360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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41
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Infrared Thermography in Symptomatic Knee Osteoarthritis: Joint Temperature Differs Based on Patient and Pain Characteristics. J Clin Med 2023; 12:jcm12062319. [PMID: 36983319 PMCID: PMC10055129 DOI: 10.3390/jcm12062319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/03/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
The aim of this study was to evaluate osteoarthritis (OA) patients with infrared thermography to investigate imaging patterns as well as demographic and clinical characteristics that influence knee inflammation. Forty patients with one-sided symptomatic knee OA were included and evaluated through knee-specific PROMs and the PainDETECT Questionnaire for neuropathic pain evaluation. Thermograms were captured using a thermographic camera FLIR-T1020 and temperatures were extracted using the software ResearchIR for the overall knee and the five ROIs: medial, lateral, medial patella, lateral patella, and suprapatellar. The mean temperature of the total knee was 31.9 ± 1.6 °C. It negatively correlated with age (rho = −0.380, p = 0.016) and positively correlated with BMI (rho = 0.421, p = 0.007) and the IKDC objective score (tau = 0.294, p = 0.016). Men had higher temperatures in the knee medial, lateral, and suprapatellar areas (p = 0.017, p = 0.019, p = 0.025, respectively). Patients with neuropathic pain had a lower temperature of the medial knee area (31.5 ± 1.0 vs. 32.3 ± 1.1, p = 0.042), with the total knee negatively correlating with PainDETECT (p = 0.045). This study demonstrated that the skin temperature of OA symptomatic knees is influenced by demographic and clinical characteristics of patients, with higher joint temperatures in younger male patients with higher BMI and worst objective knee scores and lower temperatures in patients affected by neuropathic pain.
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42
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de Oliveira EM, Nascimento ST, Mós JVDN, Roza LDF, Dos Santos TC. Maximum limit of sensible heat dissipation in Japanese quail. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2023; 67:517-526. [PMID: 36723757 DOI: 10.1007/s00484-023-02432-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
Surface temperature can be used as a tool for calculating sensible heat transfer. However, it needs to be associated with air temperature to identify the direction of heat flow (gain or loss). This study quantified sensible heat transfer in Japanese quail as a function of operative temperature. The meteorological variables were air temperature, relative humidity, and black globe temperature. Quail surface temperature was measured on 50 adult Coturnix coturnix japonica individuals 270 days old during 8 days by using a thermographic camera. The data were analyzed by the least-squares method to assess the effects of sex (male and female), period of the day (morning and afternoon), and body region (head, body, and feet). Quail surface temperature was strongly correlated with operative temperature. The total sensible heat flow was 64.02 W m-2. The morning period had a mean operative temperature of 22.48 °C, providing a higher gradient between air and quail temperature and thereby producing a higher heat flow (82.19 W m-2). In the afternoon, the heat transfer was lower (45.70 W m-2) because the operative temperature was higher (30.84 °C). Comparison between sexes showed that heat transfer was higher in females (67.37 W m-2) than in males (60.53 W m-2). The head served as an important thermal window, with a heat transfer of 78.24 W m-2, whereas the body and feet had a transfer of 56.80 W m-2. Heat transfer by sensible mechanisms was quantified in Japanese quail. Heat transfer depended greatly on ambient temperature. When the operative temperature was below 28 °C, sensible mechanisms were efficient in dissipating heat to the environment. When the ambient temperature exceeded 29 °C, quail could not effectively dissipate heat to the environment through sensible mechanisms. At 30 °C and above, heat loss shifted to heat gain, causing thermal stress in Japanese quail.
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43
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Reference Standard for Digital Infrared Thermography of the Surface Temperature of the Lower Limbs. Bioengineering (Basel) 2023; 10:bioengineering10030283. [PMID: 36978674 PMCID: PMC10045408 DOI: 10.3390/bioengineering10030283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
Digital infrared thermographic imaging (DITI) is a supplementary diagnostic technique to visualize the surface temperature of the human body. However, there is currently no reference standard for the lower limbs for accurate diagnosis. In this study, we performed DITI on the lower limbs of 905 healthy Korean volunteers (411 males and 494 females aged between 20 and 69 years) to obtain reference standard data. Thermography was conducted on the front, back, lateral sides, and sole area, and 188 regions of interest (ROIs) were analyzed. Additionally, subgroup analysis was conducted according to the proximity of ROIs, sex, and age groups. The mean temperatures of ROIs ranged from 24.60 ± 5.06 to 28.75 ± 5.76 °C and the absolute value of the temperature difference between both sides reached up to 1.06 ± 2.75 °C. According to subgroup analysis, the sole area had a significantly lower temperature than any other areas, men had higher temperatures than women, and the elderly had higher temperatures than the young adults except for the 20s age group (p < 0.001, respectively). This result could be used as a foundation for the establishment of a reference standard for DITI. Practical patient DITI can be accurately interpreted using these data, and it can serve as a basis for further scientific research.
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Tattersall GJ, Campbell KL. Thermoconforming rays of the star-nosed mole. J Exp Biol 2023; 226:286733. [PMID: 36688286 DOI: 10.1242/jeb.245127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/13/2023] [Indexed: 01/24/2023]
Abstract
The star-nosed mole (Condylura cristata) is renowned for its densely innervated 22 appendage star-like rostrum ('star') specialized for tactile sensation. As a northerly distributed insectivorous mammal exploiting aquatic and terrestrial habitats, these vascularized nasal rays are regularly exposed to cold water and thermally conductive soil, leading us to ask whether the star surface temperature, a proxy for blood flow, conforms to the local ambient temperature to conserve body heat. Alternatively, given the exquisite sensory nature of the star, we posited that the uninsulated rays may be kept warm when foraging to maintain high mechanosensory function. To test these hypotheses, we remotely monitored surface temperatures in wild-caught star-nosed moles. Although the tail acted as a thermal window exhibiting clear vasoconstriction/vasodilation, the star varied passively in surface temperature, with little evidence for thermoregulatory vasomotion. This thermoconforming response may have evolved to minimize conductive heat loss to the water or wet soils when foraging.
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Affiliation(s)
- Glenn J Tattersall
- Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St Catharines, ON, CanadaL2S 3A1
| | - Kevin L Campbell
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada, R3T 2N2
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45
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Zuluaga JD, Danner RM. Acute stress and restricted diet reduce bill-mediated heat dissipation in the song sparrow (Melospiza melodia): implications for optimal thermoregulation. J Exp Biol 2023; 226:286688. [PMID: 36651227 DOI: 10.1242/jeb.245316] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
We used thermal imaging to show that two environmental factors - acute stress and diet - influence thermoregulatory performance of a known thermal window, the avian bill. The bill plays important roles in thermoregulation and water balance. Given that heat loss through the bill is adjustable through vasoconstriction and vasodilation, and acute stress can cause vasoconstriction in peripheral body surfaces, we hypothesized that stress may influence the bill's role as a thermal window. We further hypothesized that diet influences heat dissipation from the bill, given that body condition influences the surface temperature of another body region (the eye region). We measured the surface temperature of the bills of song sparrows (Melospiza melodia) before, during and after handling by an observer at 37°C ambient temperature. We fed five birds a restricted diet intended to maintain body mass typical of wild birds, and we fed six birds an unrestricted diet for 5 months prior to experiments. Acute stress caused a decrease in the surface temperature of the bill, resulting in a 32.4% decrease in heat dissipation immediately following acute stress, before recovering over approximately 2.3 min. The initial reduction and subsequent recovery provide partial support for the hemoprotective and thermoprotective hypotheses, which predict a reduction or increase in peripheral blood flow, respectively. Birds with unrestricted diets had larger bills and dissipated more heat, indicating that diet and body condition influence bill-mediated heat dissipation and thermoregulation. These results indicate that stress-induced vascular changes and diet can influence mechanisms of heat loss and potentially inhibit optimal thermoregulation.
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Affiliation(s)
- Juan D Zuluaga
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, NC 28403-5915, USA
| | - Raymond M Danner
- Department of Biology and Marine Biology, University of North Carolina Wilmington, Wilmington, NC 28403-5915, USA.,Smithsonian Migratory Bird Center, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, D.C. 20008, USA
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46
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Eberts ER, Tattersall GJ, Auger PJ, Curley M, Morado MI, Strauss EG, Powers DR, Soveral NC, Tobalske BW, Shankar A. Free-living Allen's hummingbirds (Selasphorus sasin) rarely use torpor while nesting. J Therm Biol 2023; 112:103391. [PMID: 36796880 DOI: 10.1016/j.jtherbio.2022.103391] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 10/27/2022] [Accepted: 11/22/2022] [Indexed: 12/11/2022]
Abstract
For reproducing animals, maintaining energy balance despite thermoregulatory challenges is important for surviving and successfully raising offspring. This is especially apparent in small endotherms that exhibit high mass-specific metabolic rates and live in unpredictable environments. Many of these animals use torpor, substantially reducing their metabolic rate and often body temperature to cope with high energetic demands during non-foraging periods. In birds, when the incubating parent uses torpor, the lowered temperatures that thermally sensitive offspring experience could delay development or increase mortality risk. We used thermal imaging to noninvasively explore how nesting female hummingbirds sustain their own energy balance while effectively incubating their eggs and brooding their chicks. We located 67 active Allen's hummingbird (Selasphorus sasin) nests in Los Angeles, California and recorded nightly time-lapse thermal images at 14 of these nests for 108 nights using thermal cameras. We found that nesting females usually avoided entering torpor, with one bird entering deep torpor on two nights (2% of nights), and two other birds possibly using shallow torpor on three nights (3% of nights). We also modeled nightly energetic requirements of a bird experiencing nest temperatures vs. ambient temperature and using torpor or remaining normothermic, using data from similarly-sized broad-billed hummingbirds. Overall, we suggest that the warm environment of the nest, and possibly shallow torpor, help brooding female hummingbirds reduce their own energy requirements while prioritizing the energetic demands of their offspring.
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Affiliation(s)
- Erich R Eberts
- Center for Urban Resilience (CURes), Loyola Marymount University, 1 LMU Drive Los Angeles California, 90045, USA.
| | - Glenn J Tattersall
- Department of Biological Sciences, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON, L2S 3A1, Canada
| | - Peter J Auger
- Center for Urban Resilience (CURes), Loyola Marymount University, 1 LMU Drive Los Angeles California, 90045, USA
| | - Maria Curley
- Center for Urban Resilience (CURes), Loyola Marymount University, 1 LMU Drive Los Angeles California, 90045, USA
| | - Melissa I Morado
- Center for Urban Resilience (CURes), Loyola Marymount University, 1 LMU Drive Los Angeles California, 90045, USA; Department of Biology/1878, Colorado State University, Fort Collins, CO, 80523-1878, USA
| | - Eric G Strauss
- Center for Urban Resilience (CURes), Loyola Marymount University, 1 LMU Drive Los Angeles California, 90045, USA
| | - Donald R Powers
- Biology Department, George Fox University, Newberg, OR, 97132, USA
| | - Noemi C Soveral
- Biology Department, George Fox University, Newberg, OR, 97132, USA
| | - Bret W Tobalske
- Division of Biological Sciences, University of Montana, 32 Campus Dr, Missoula, MT, 59812, USA
| | - Anusha Shankar
- Cornell Lab of Ornithology, Cornell University, Ithaca, NY, 14850, USA
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47
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Bissonnette PB, Waterman JM, Petersen SD. The use of infrared thermography to noninvasively measure the surface temperature of polar bears during bouts of social play. Zoo Biol 2023; 42:38-44. [PMID: 35872605 DOI: 10.1002/zoo.21722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 04/10/2022] [Accepted: 07/13/2022] [Indexed: 11/11/2022]
Abstract
Infrared thermography or thermal imagery is a noninvasive tool that can be used to measure the temperature of surfaces. Typically, thermal imagery is used for construction or military purposes but is increasingly used as a noninvasive tool in wildlife studies. We investigated the use of thermal imagery to measure surface temperature changes as a proxy for energetic expenditure. We measured the surface temperature of polar bear (Ursus maritimus) eyes, while immobilized, to determine whether the eye is a thermal window that can accurately indicate internal temperature. We found a significant difference (2.68 ± 0.41°C) between the surface temperature of the eye measured with thermal imagery and the internal rectal temperature. Additionally, we measured surface temperature changes in polar bears after bouts of social play as a proxy for energy expenditure. Mean temperature of the eye increased by 1.34 ± 0.43°C after social play, indicating that this activity increased energy expenditure. During the fasting season, polar bears rely on fat stores, and any energy expenditure beyond what is required to travel may be costly to their survival, particularly in years of low resource availability. We conclude that thermal imagery is a useful tool to noninvasively investigate the energetics of social play.
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Affiliation(s)
- Paige B Bissonnette
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jane M Waterman
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Stephen D Petersen
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.,Assiniboine Park Zoo, Winnipeg, Manitoba, Canada
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Heyboer M, Kozminski AG, Pacelli LD, Wojcik SM. Pilot study: Utility of long-wave infrared thermography as a correlate to transcutaneous oximetry for candidates of hyperbaric oxygen therapy. Wound Repair Regen 2023; 31:40-46. [PMID: 36153675 DOI: 10.1111/wrr.13052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 01/25/2023]
Abstract
Hyperbaric oxygen (HBO2 ) has been used as an adjunctive treatment for the care of advanced non-healing diabetic foot ulcers (DFUs). A patient's in-chamber transcutaneous oximetry measurement (TCOM) is currently the most effective predictor for response to HBO2 therapy but still excludes close to one in four patients who would benefit out of treatment groups when used for patient selection. Improving selection tools and criteria could potentially help better demonstrate HBO2 therapy's efficacy for such patients. We sought to identify if long-wave infrared thermography (LWIT) measurements held any correlation with a patient's TCOM measurements and if LWIT could be used in a response prediction role for adjunctive HBO2 therapy. To investigate, 24 patients already receiving TCOM measurements were enrolled to simultaneously be imaged with LWIT. LWIT measurements were taken throughout each patient's therapeutic course whether they underwent only standard wound care or adjunctive HBO2 treatments. A significant correlation was found between in-chamber TCOM and post-HBO2 LWIT. There was also a significant difference in the post-HBO2 LWIT measurement from 1st treatment to 6 weeks or the last treatment recorded. These initial findings are important as they indicate a possible clinical use for LWIT in the selection process for patients for HBO2 therapy. Larger studies should be carried out to further articulate the clinical use of LWIT in this capacity.
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Affiliation(s)
- Marvin Heyboer
- Division of Hyperbaric Medicine & Wound Care, Department of Emergency Medicine, SUNY Upstate Medical University, Syracuse, New York, USA
| | - Andrew G Kozminski
- Department of Emergency Medicine, University of Rochester Medical Center, Rochester, New York, USA
| | - Lauren D Pacelli
- Division of Hyperbaric Medicine & Wound Care, Department of Emergency Medicine, SUNY Upstate Medical University, Syracuse, New York, USA
| | - Susan M Wojcik
- Division of Hyperbaric Medicine & Wound Care, Department of Emergency Medicine, SUNY Upstate Medical University, Syracuse, New York, USA
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Prpic A, Kasumovic A, Guarro IG, Matoc I, Mirosevic G, Zrinscak O, Ivekovic R, Vickovic IP, Loncar VL, Vatavuk Z, Sabol I. The Role of Thermal Camera in the Assessment of Thyroid Eye Disease Activity. Acta Inform Med 2023; 31:260-264. [PMID: 38379681 PMCID: PMC10875954 DOI: 10.5455/aim.2023.31.260-264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 12/18/2023] [Indexed: 02/22/2024] Open
Abstract
Background Thyroid eye disease (TED; also known as thyroid - associated orbitopathy, Graves ophthalmopathy) is an autoimmune inflammatory disease which presents in typical signs and symptoms such as deep orbital pain, chemosis with or without caruncular edema, unilateral or bilateral proptosis, eyelid retraction, eyelid edema or erythema, restrictive strabismus and compressive optic neuropathy. Objective The aim of this study was to investigate the role of thermal camera in the assessment of thyroid eye disease (TED) activity compared to the Clinical Activity Score (CAS) scale, exophthalmometry values, and thyroid hormone and antibody levels. Methods A total of 50 patients participated in this cross-sectional study of whom 29 were in the active phase of TED according to the sum on CAS scale and 21 patients in the inactive phase. The Flir E8® thermal camera was used to measure the temperature of the orbital area and the values were compared with the CAS scale, exophthalmometry values and thyroid hormone and antibody levels. Results Higher values of temperature (p>0.0001), CAS score (p>0.0001), exophthalmometry (p=0.022), FT4 (p=0.0176) and TRAb (p=0.0091) were found in patients in the active phase of TED. Temperature of orbital area showed statistically significant positive correlation with CAS scale (p=0.0001), exophthalmometry values (p=0.0022) and anti-TPO levels (p=0.019). Conclusion Thermal camera showed higher values of the temperature of the orbital area in patients in the active phase of the disease and positively correlated with the CAS scale, exophthalmometry findings and anti-TPO levels.
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Affiliation(s)
- Ante Prpic
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Armin Kasumovic
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Idoia Goñi Guarro
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Ines Matoc
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Gorana Mirosevic
- Clinic for Thyroid Diseases at the Department of Endocrinology, Diabetes and Metabolic Diseases “Mladen Sekso”, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Ognjen Zrinscak
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Renata Ivekovic
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Ivanka Petric Vickovic
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | | | - Zoran Vatavuk
- Department of Ophthalmology, University Hospital Center Sestre Milosrdnice, Zagreb, Croatia
| | - Ivan Sabol
- Division of Molecular Medicine, Rudjer Bosković Institute, Zagreb, Croatia
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50
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Cooper CE, Withers PC. Postural, pilo-erective and evaporative thermal windows of the short-beaked echidna ( Tachyglossus aculeatus). Biol Lett 2023; 19:20220495. [PMID: 36651031 PMCID: PMC9845966 DOI: 10.1098/rsbl.2022.0495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
We identify for wild, free-living short-beaked echidnas (Tachyglossus aculeatus) a novel evaporative window, along with thermal windows, and demonstrate the insulating properties of the spines, using infrared thermography. The moist tip of their beak, with an underlying blood sinus, functions as a wet bulb globe thermometer, maximizing evaporative heat loss via an evaporative window. The ventral surface and insides of the legs are poorly insulated sites that act as postural thermal windows, while the spines provide flexible insulation (depending on piloerection). These avenues of heat exchange likely contribute to the higher-than-expected thermal tolerance of this species. Our study highlights how technological advances that allow for non-contact measurement of thermal variables allow us to better understand the physiological capacity of animals in their natural environment.
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Affiliation(s)
- Christine Elizabeth Cooper
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, Australia,School of Biological Sciences, University of Western Australia, Perth, Western Australia, Australia
| | - Philip Carew Withers
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, Australia,School of Biological Sciences, University of Western Australia, Perth, Western Australia, Australia
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